/* =============================================================================
   Raj IT Custom - Components CSS
   Specific UI Components for Portfolio Website
   ============================================================================= */

/* =============================================================================
   Header & Navigation
   ============================================================================= */

.site-header {
    position: sticky;
    top: 0;
    background-color: #00549A;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    z-index: var(--z-sticky);
    transition: background-color var(--transition-normal);
}

.navbar {
    padding: var(--spacing-md) 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.nav-brand {
    display: flex;
    align-items: center;
}

.brand-link {
    text-decoration: none;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-white);
    transition: opacity var(--transition-fast);
}

.brand-link:hover {
    opacity: 0.9;
}

.brand-text {
    color: var(--color-text-white);
}

.brand-logo {
    color: var(--color-text-white) !important;
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.05em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.brand-accent {
    color: var(--color-accent);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    gap: 4px;
}

.nav-toggle-line {
    width: 24px;
    height: 2px;
    background-color: var(--color-text-white);
    transition: all var(--transition-fast);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus {
    color: var(--color-text-white);
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-cta {
    background-color: var(--color-accent);
    color: var(--color-text-white) !important;
}

.nav-cta:hover {
    background-color: #f59e0b;
    transform: translateY(-1px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-background);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: var(--spacing-xl);
        border-top: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        padding: var(--spacing-md);
        text-align: center;
        border-bottom: 1px solid var(--color-border-light);
    }

    .nav-link:last-child {
        border-bottom: none;
    }
}

/* =============================================================================
   Hero Sections
   ============================================================================= */

.hero {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-background-light) 100%);
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.hero-accent {
    color: var(--color-primary);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-2xl);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-code-block {
    background-color: var(--color-background-dark);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    max-width: 400px;
    width: 100%;
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid #374151;
}

.code-dots {
    display: flex;
    gap: var(--spacing-sm);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.code-title {
    color: #9ca3af;
    font-size: var(--font-size-sm);
}

.code-content {
    font-family: 'Fira Code', 'Monaco', 'Consolas', monospace;
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.code-keyword { color: #8b5cf6; }
.code-class { color: #f59e0b; }
.code-method { color: #10b981; }
.code-string { color: #ef4444; }
.code-comment { color: #6b7280; }

@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-2xl) 0;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-description {
        font-size: var(--font-size-base);
    }

    .hero-actions {
        justify-content: center;
    }
}

/* =============================================================================
   Page Headers
   ============================================================================= */

.page-header {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: var(--color-text-white);
    text-align: center;
}

.page-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-white);
}

.page-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .page-header {
        padding: var(--spacing-2xl) 0;
    }

    .page-title {
        font-size: var(--font-size-2xl);
    }

    .page-description {
        font-size: var(--font-size-base);
    }
}

/* =============================================================================
   Sections
   ============================================================================= */

.section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.section-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-light);
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-3xl);
}

/* =============================================================================
   Project Cards
   ============================================================================= */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.project-card {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.project-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.project-image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-color: var(--color-background-light);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-actions {
    display: flex;
    gap: var(--spacing-md);
}

.project-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--color-text-light);
}

.project-content {
    padding: var(--spacing-xl);
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.project-category {
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-date {
    color: var(--color-text-light);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.project-description {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.project-challenge,
.project-solution {
    margin-bottom: var(--spacing-lg);
}

.challenge-title,
.solution-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.challenge-text,
.solution-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

.project-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tech-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-footer {
    border-top: 1px solid var(--color-border-light);
    padding-top: var(--spacing-lg);
}

.project-links {
    display: flex;
    gap: var(--spacing-lg);
}

.project-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.project-link:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

/* =============================================================================
   Service Cards
   ============================================================================= */

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
}

.service-card {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.service-card.featured {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-primary-light) 100%);
}

.service-header {
    margin-bottom: var(--spacing-xl);
}

.service-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-2xl);
    margin-bottom: var(--spacing-lg);
}

.service-card.featured .service-icon {
    background-color: var(--color-primary);
    color: var(--color-text-white);
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.service-description {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-xl);
}

.service-features {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: var(--spacing-sm) 0;
    color: var(--color-text-light);
    position: relative;
    padding-left: var(--spacing-lg);
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: var(--font-weight-bold);
}

.service-pricing {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border-light);
}

.price-range {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

/* =============================================================================
   Skills Section
   ============================================================================= */

.skills-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-3xl);
}

.skill-category {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
}

.category-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xl);
    color: var(--color-text);
    text-align: center;
}

.skills-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.skill-name {
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

.skill-bar {
    height: 8px;
    background-color: var(--color-border-light);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* =============================================================================
   Timeline
   ============================================================================= */

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-3xl);
    padding-left: calc(60px + var(--spacing-xl));
}

.timeline-marker {
    position: absolute;
    left: 20px;
    top: 8px;
    width: 20px;
    height: 20px;
    background-color: var(--color-primary);
    border: 4px solid var(--color-background);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--color-border);
}

.timeline-content {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.timeline-date {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.timeline-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.timeline-company {
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

.timeline-description {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.timeline-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

@media (max-width: 768px) {
    .timeline::before {
        left: 15px;
    }

    .timeline-item {
        padding-left: calc(30px + var(--spacing-lg));
    }

    .timeline-marker {
        left: 5px;
        width: 16px;
        height: 16px;
    }
}

/* =============================================================================
   Contact Form
   ============================================================================= */

.contact-section {
    padding: var(--spacing-4xl) 0;
}

.contact-methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
}

.contact-method-card {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all 0.3s ease;
}

.contact-method-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.contact-method-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-lg);
}

.contact-method-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.contact-method-description {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.contact-method-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-detail {
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
}

.contact-response-time {
    color: var(--color-text-light);
    font-size: var(--font-size-xs);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.contact-info {
    background-color: var(--color-background-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
}

.contact-info-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.contact-info-description {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2xl);
}

.contact-methods {
    margin-bottom: var(--spacing-2xl);
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.contact-method-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.contact-method-content {
    flex: 1;
}

.contact-method-title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.contact-method-link {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-method-link:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

.contact-method-text {
    color: var(--color-text-light);
}

.contact-social {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-xl);
}

.contact-social-title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.social-links {
    display: flex;
    gap: var(--spacing-lg);
}

.social-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-light);
    text-decoration: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.social-link:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.contact-form-container {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-sm);
}

.form-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.form-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.form-description {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

.form-actions {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.form-note {
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.form-note svg {
    flex-shrink: 0;
    opacity: 0.7;
}

/* Enhanced Form Field Styles */
.form-section {
    margin-bottom: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid var(--color-border-light);
}

.form-section:last-of-type {
    border-bottom: none;
    margin-bottom: var(--spacing-2xl);
    padding-bottom: 0;
}

.form-section-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--spacing-xl);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.form-label .required {
    color: var(--color-error);
    font-size: var(--font-size-base);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--color-border-dark);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background-color: var(--color-background);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--color-error);
}

.form-input.error:focus,
.form-select.error:focus,
.form-textarea.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    line-height: var(--line-height-relaxed);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: var(--spacing-3xl);
    cursor: pointer;
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--color-error);
    min-height: 20px;
    display: none;
    margin-top: var(--spacing-xs);
}

.form-error.show {
    display: block;
}

.form-character-count {
    text-align: right;
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
}

.form-character-count #message-count {
    font-weight: var(--font-weight-semibold);
    transition: color 0.3s ease;
}

/* Form Messages */
.form-messages {
    margin-top: var(--spacing-xl);
}

.form-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
    animation: slideDown 0.3s ease-out;
}

.form-message svg {
    flex-shrink: 0;
}

.form-message-success {
    background-color: #d1fae5;
    border: 1px solid #10b981;
    color: #065f46;
}

.form-message-success svg {
    color: #10b981;
}

.form-message-error {
    background-color: #fee2e2;
    border: 1px solid #ef4444;
    color: #991b1b;
}

.form-message-error svg {
    color: #ef4444;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Submit Button States */
.btn-loading {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Tab Indicator for Keyboard Navigation */
.tab-indicator {
    position: fixed;
    left: 0;
    width: 4px;
    height: 0;
    background-color: var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    opacity: 0;
    transition: all 0.2s ease;
    pointer-events: none;
    z-index: var(--z-sticky);
}

.tab-indicator.active {
    opacity: 1;
    height: 48px;
}

/* Form Section Focus Effects */
.form-section {
    transition: filter 0.3s ease, opacity 0.3s ease;
}

/* Responsive enhancements - work with clean-design.css */
@media (max-width: 768px) {
    /* Additional contact grid responsive fixes */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .social-links {
        flex-direction: column;
    }

    /* Ensure form inputs are touch-friendly */
    .form-input,
    .form-select,
    .form-textarea {
        min-height: 44px; /* iOS recommended touch target */
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

/* =============================================================================
   Footer
   ============================================================================= */

.site-footer {
    background-color: var(--color-background-dark);
    color: var(--color-text-white);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-section {
    display: flex;
    flex-direction: column;
}

.footer-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-xl);
}

.footer-subtitle {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-text-white);
}

.footer-service {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

.footer-social {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

/* Enhanced Social Media Links */
.social-link-enhanced {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.social-link-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 50%;
}

.social-link-enhanced:hover {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--color-text-white);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

.social-link-enhanced:hover::before {
    opacity: 1;
}

.social-link-enhanced svg {
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.social-link-enhanced:hover svg {
    transform: scale(1.1);
}

.social-link-enhanced:active {
    transform: translateY(-2px) scale(1.02);
}

.footer-contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
}

.footer-contact-link {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-contact-link:hover {
    color: var(--color-text-white);
    text-decoration: underline;
}

.footer-cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-primary);
    color: var(--color-text-white);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    transition: background-color var(--transition-fast);
}

.footer-cta-button:hover {
    background-color: var(--color-primary-hover);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-xl);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

/* Back to Top Button */
.back-to-top-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-text-white);
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.back-to-top-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.back-to-top-btn:active {
    transform: translateY(-1px);
}

.back-to-top-btn .material-icons {
    font-size: 18px;
    transition: transform 0.3s ease;
}

.back-to-top-btn:hover .material-icons {
    transform: translateY(-2px);
}

.back-to-top-text {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal-item {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.footer-legal-item:hover {
    color: rgba(255, 255, 255, 0.8);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }

    .footer-nav {
        align-items: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
}

/* =============================================================================
   CTA Sections
   ============================================================================= */

.cta-section {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--color-background-light) 0%, #f8fafc 100%);
    border-top: 1px solid var(--color-border-light);
    color: var(--color-text);
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.cta-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2xl);
    color: var(--color-text-light);
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

/* CTA Section Button Overrides for Light Background */
.cta-section .btn-white {
    background-color: var(--color-primary);
    color: var(--color-text-white);
    border-color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

.cta-section .btn-white:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.cta-section .btn-outline-white {
    background-color: transparent;
    color: var(--color-text);
    border-color: var(--color-border-dark);
    border-width: 2px;
    font-weight: var(--font-weight-semibold);
}

.cta-section .btn-outline-white:hover {
    background-color: var(--color-text);
    color: var(--color-text-white);
    border-color: var(--color-text);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(31, 41, 55, 0.2);
}

@media (max-width: 768px) {
    .cta-section {
        padding: var(--spacing-2xl) 0;
    }

    .cta-title {
        font-size: var(--font-size-2xl);
    }

    .cta-description {
        font-size: var(--font-size-base);
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
}

/* =============================================================================
   Project Filters
   ============================================================================= */

.projects-filter {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-background-light);
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.filter-tab {
    padding: var(--spacing-md) var(--spacing-xl);
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-light);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-tab:hover,
.filter-tab.active {
    background-color: var(--color-primary);
    color: var(--color-text-white);
    border-color: var(--color-primary);
}

@media (max-width: 768px) {
    .filter-tabs {
        gap: var(--spacing-sm);
    }

    .filter-tab {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
}

/* =============================================================================
   Utility Classes for Components
   ============================================================================= */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.6s ease-out forwards;
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    animation: slideInLeft 0.6s ease-out forwards;
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    animation: slideInRight 0.6s ease-out forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* =============================================================================
   FAQ Accordion Styles (Contact Page)
   ============================================================================= */

.faq-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.faq-item.active {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl);
    background-color: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: all 0.3s ease;
    gap: var(--spacing-lg);
}

.faq-question:hover {
    background-color: var(--color-background-light);
}

.faq-question:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
}

.faq-question[aria-expanded="true"] {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.faq-question-text {
    flex: 1;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.faq-question[aria-expanded="true"] .faq-question-text {
    color: var(--color-primary);
}

.faq-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--color-text-light);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.faq-icon svg {
    width: 20px;
    height: 20px;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer.expanded {
    max-height: 1000px;
    padding: 0 var(--spacing-xl) var(--spacing-xl);
}

.faq-answer-content {
    padding-top: var(--spacing-md);
}

.faq-answer-content p {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.faq-answer-content p:last-child {
    margin-bottom: 0;
}

.faq-answer-content strong {
    color: var(--color-text);
    font-weight: var(--font-weight-semibold);
}

.faq-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

.faq-list li {
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-xl);
    color: var(--color-text-light);
    position: relative;
    line-height: var(--line-height-relaxed);
}

.faq-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
}

.faq-highlight {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-primary-light);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius-md);
    margin: var(--spacing-lg) 0;
}

.faq-highlight svg {
    flex-shrink: 0;
    color: var(--color-primary);
}

.faq-highlight span {
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
}

.faq-process-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.faq-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--color-background-light);
    border-radius: var(--radius-md);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--color-primary);
    color: var(--color-text-white);
    font-weight: var(--font-weight-bold);
    border-radius: 50%;
    flex-shrink: 0;
}

.faq-step span:not(.step-number) {
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
}

@media (max-width: 768px) {
    .faq-question {
        padding: var(--spacing-lg);
    }

    .faq-question-text {
        font-size: var(--font-size-base);
    }

    .faq-answer.expanded {
        padding: 0 var(--spacing-lg) var(--spacing-lg);
    }

    .faq-icon svg {
        width: 16px;
        height: 16px;
    }
}

/* =============================================================================
   Accordion Styles (About Page Journey)
   ============================================================================= */

.journey-accordion {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-lg) 0;
}

.accordion-item {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.accordion-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.accordion-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl) var(--spacing-2xl);
    background-color: var(--color-background);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
}

.accordion-header:hover {
    background-color: var(--color-background-light);
}

.accordion-header[aria-expanded="true"] {
    background-color: var(--color-primary-light);
    border-bottom: 1px solid var(--color-border-light);
}

.accordion-header-content {
    flex: 1;
    padding-right: var(--spacing-lg);
}

.era-period {
    display: block;
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.accordion-header[aria-expanded="true"] .era-period {
    color: var(--color-primary);
}

.era-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    margin: 0;
    line-height: 1.3;
}

.accordion-icon {
    width: 24px;
    height: 24px;
    color: var(--color-text-light);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    margin-left: var(--spacing-lg);
}

.accordion-header[aria-expanded="true"] .accordion-icon {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.accordion-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.accordion-content.active {
    grid-template-rows: 1fr;
    padding: 0 var(--spacing-2xl) var(--spacing-2xl);
    max-height: 3000px;
}

.accordion-content > div {
    min-height: 0;
}

.era-description {
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    font-size: 1rem;
    padding-top: var(--spacing-md);
}

.era-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.era-tech {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.2s ease;
}

.era-tech:hover {
    background-color: var(--color-primary);
    color: var(--color-text-white);
    transform: translateY(-2px);
}

.era-highlight {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.era-highlight-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.era-highlight-text {
    flex: 1;
    color: var(--color-text);
    line-height: var(--line-height-relaxed);
}

@media (max-width: 768px) {
    .accordion-header {
        padding: var(--spacing-lg) var(--spacing-xl);
    }

    .accordion-content.active {
        padding: 0 var(--spacing-xl) var(--spacing-xl);
    }

    .era-title {
        font-size: 1.25rem;
    }

    .era-period {
        font-size: 0.7rem;
    }

    .accordion-icon {
        width: 20px;
        height: 20px;
        margin-left: var(--spacing-md);
    }

    .era-description {
        font-size: 0.95rem;
    }

    .era-tech {
        font-size: 0.7rem;
        padding: var(--spacing-xs) var(--spacing-md);
    }
}