/* ================================
   MODERN PORTFOLIO CSS
   Design from scratch by Claude
   ================================ */

/* === RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - True Monochrome */
    --primary: #FFFFFF;
    --primary-light: #E5E5E5;
    --primary-dark: #A3A3A3;
    --secondary: #737373;
    --accent: #FFFFFF;

    /* Backgrounds */
    --bg-primary: #000000;
    --bg-secondary: #0A0A0A;
    --bg-card: rgba(18, 18, 18, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.02);

    /* Text */
    --text-primary: #FFFFFF;
    --text-secondary: #A3A3A3;
    --text-muted: #737373;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 30px rgba(255, 255, 255, 0.1);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background:
        /* Damascus marble effect - subtle gray waves */
        radial-gradient(ellipse at 20% 30%, rgba(40, 40, 40, 0.4) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(25, 25, 25, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(35, 35, 35, 0.2) 0%, transparent 70%),
        radial-gradient(ellipse at 10% 80%, rgba(30, 30, 30, 0.3) 0%, transparent 60%),
        radial-gradient(ellipse at 90% 20%, rgba(28, 28, 28, 0.25) 0%, transparent 55%),
        linear-gradient(135deg, #0a0a0a 0%, #000000 25%, #0f0f0f 50%, #000000 75%, #0a0a0a 100%);
    background-size: 200% 200%;
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-weight: 400;
    animation: damascus-shift 30s ease-in-out infinite alternate;
}

@keyframes damascus-shift {
    0% {
        background-position: 0% 50%;
    }
    100% {
        background-position: 100% 50%;
    }
}

/* === DAMASCUS TEXTURE OVERLAY === */
.gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.6;
    background-image:
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.008) 2px,
            rgba(255, 255, 255, 0.008) 4px
        ),
        repeating-linear-gradient(
            -45deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.006) 2px,
            rgba(255, 255, 255, 0.006) 4px
        );
    pointer-events: none;
}

/* === UTILITIES === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* === NAVIGATION === */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

.nav.scrolled {
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
    transition: transform var(--transition-base);
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-logo img {
    height: 40px;
    width: auto;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.nav-link:hover::after {
    width: 50%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

/* === HERO SECTION === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-2xl) 0;
    position: relative;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--primary-light);
    margin-bottom: var(--spacing-md);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.gradient-text {
    color: var(--text-secondary);
    font-weight: 300;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-light);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 400px;
    height: 400px;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.2);
    background: var(--primary-light);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* === HERO VISUAL CARDS === */
.hero-visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.visual-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-bounce);
}

.visual-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
    border-color: var(--primary);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.card-icon-svg {
    margin-bottom: var(--spacing-md);
}

.visual-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.visual-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.card-1 {
    grid-column: span 2;
}

/* === SECTIONS === */
section {
    padding: var(--spacing-2xl) 0;
    position: relative;
}

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

.section-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--primary-light);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* === ABOUT SECTION === */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: var(--spacing-lg);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.timeline-dot {
    position: absolute;
    left: calc(-1 * var(--spacing-lg) - 6px);
    top: 0;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 4px var(--bg-secondary);
}

.timeline-date {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--primary-light);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Info Cards */
.about-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.info-card:hover {
    transform: translateX(10px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.info-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.info-icon-svg {
    margin-bottom: var(--spacing-md);
}

.info-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.info-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* === SKILLS SECTION === */
.skills-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.category-section {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.category-section:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.2);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.category-icon {
    flex-shrink: 0;
}

.category-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.category-desc {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.skill-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag {
    padding: 0.4rem 0.875rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.tag:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

/* === TECHNOLOGIES SECTION === */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
}

.tech-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-bounce);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.02);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.tech-card:hover::before {
    opacity: 1;
}

.tech-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.tech-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    transition: all var(--transition-bounce);
}

.tech-card:hover .tech-icon {
    transform: scale(1.1) rotateY(360deg);
}

.tech-card h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.tech-level {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tech-level.expert {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.tech-level.advanced {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.tech-level.intermediate {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* === PROJECTS SECTION === */
.projects {
    padding: var(--spacing-2xl) 0;
}

.project-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--primary);
    color: var(--bg-primary);
    border-color: var(--primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.project-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-image {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: var(--bg-secondary);
}

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

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

.project-overlay {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
}

.project-status {
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-status.completed {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.project-status.in-progress {
    background: rgba(163, 163, 163, 0.15);
    color: var(--text-secondary);
    border: 1px solid rgba(163, 163, 163, 0.3);
}

.project-content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.project-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.project-progress {
    margin: var(--spacing-sm) 0;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.progress-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.progress-value {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 700;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary));
    border-radius: var(--radius-full);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
}

.tech-tag {
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.project-link {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.project-link:hover:not(.disabled) {
    background: var(--primary);
    color: var(--bg-primary);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.project-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.project-link svg {
    width: 16px;
    height: 16px;
}

/* Project filters animation */
.project-card[data-status="completed"].hide,
.project-card[data-status="in-progress"].hide {
    display: none;
}

/* === CONTACT SECTION === */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.contact-info p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

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

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

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-icon-svg {
    flex-shrink: 0;
}

.contact-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.contact-value {
    display: block;
    color: var(--text-primary);
    font-weight: 500;
    text-decoration: none;
}

.contact-value:hover {
    color: var(--primary-light);
}

/* Form */
.contact-form {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1.125rem;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.05);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Challenge Cloudflare personnalisé (style checkbox) */
.cloudflare-challenge {
    margin: var(--spacing-lg) 0;
    padding: 1rem 1.25rem;
    background: rgba(15, 15, 15, 0.6);
    border: 2px solid rgba(79, 70, 229, 0.25);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: all 0.3s ease;
}

.cloudflare-challenge.verifying {
    border-color: rgba(79, 70, 229, 0.4);
}

.cloudflare-challenge.verified {
    border-color: rgba(16, 185, 129, 0.5);
    background: rgba(16, 185, 129, 0.05);
}

.cloudflare-challenge.error {
    border-color: rgba(239, 68, 68, 0.5);
    background: rgba(239, 68, 68, 0.05);
    animation: shake 0.5s ease-in-out;
}

/* Checkbox style */
.challenge-checkbox {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.3s ease;
}

.cloudflare-challenge.verifying .challenge-checkbox {
    border-color: rgba(79, 70, 229, 0.6);
    background: rgba(79, 70, 229, 0.1);
}

.cloudflare-challenge.verified .challenge-checkbox {
    border-color: rgba(16, 185, 129, 0.8);
    background: rgba(16, 185, 129, 0.2);
}

.cloudflare-challenge.error .challenge-checkbox {
    border-color: rgba(239, 68, 68, 0.8);
    background: rgba(239, 68, 68, 0.2);
}

.checkbox-inner {
    position: relative;
    width: 20px;
    height: 20px;
}

/* Spinner (état en cours) */
.checkbox-spinner {
    position: absolute;
    top: 0;
    left: 0;
    color: var(--accent-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.cloudflare-challenge.verifying .checkbox-spinner {
    opacity: 1;
}

/* Checkmark (état vérifié) */
.checkbox-checkmark {
    position: absolute;
    top: 0;
    left: 0;
    color: #10B981;
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.cloudflare-challenge.verified .checkbox-checkmark {
    opacity: 1;
    transform: scale(1);
}

/* Contenu texte */
.challenge-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.challenge-text {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    line-height: 1.4;
    transition: color 0.3s ease;
}

.cloudflare-challenge.verified .challenge-text {
    color: #10B981;
}

.cloudflare-challenge.error .challenge-text {
    color: #EF4444;
}

/* Footer avec icône Cloudflare */
.challenge-footer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.challenge-provider {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cloudflare-icon {
    width: 16px;
    height: 16px;
    color: var(--accent-primary);
    opacity: 0.6;
    transition: all 0.3s ease;
}

.cloudflare-challenge:hover .cloudflare-icon {
    opacity: 1;
    transform: translateY(-1px);
}

.challenge-brand {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 600;
    letter-spacing: 0.025em;
    transition: color 0.3s ease;
}

.cloudflare-challenge:hover .challenge-brand {
    color: rgba(255, 255, 255, 0.7);
}

/* Masquer le vrai Turnstile */
.cf-turnstile-hidden {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
    overflow: hidden;
}

/* Responsive */
@media (max-width: 480px) {
    .cloudflare-challenge {
        padding: 0.875rem 1rem;
        gap: 0.875rem;
    }

    .challenge-checkbox {
        width: 24px;
        height: 24px;
    }

    .checkbox-inner {
        width: 18px;
        height: 18px;
    }

    .checkbox-spinner,
    .checkbox-checkmark {
        width: 18px;
        height: 18px;
    }

    .challenge-text {
        font-size: 0.875rem;
    }

    .challenge-provider {
        font-size: 0.6875rem;
    }

    .cloudflare-icon {
        width: 14px;
        height: 14px;
    }

    .challenge-brand {
        font-size: 0.6875rem;
    }
}

/* Animations */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

.form-response {
    margin-bottom: var(--spacing-md);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    display: none;
    animation: slideDown 0.3s ease;
}

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

.form-response.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid #10B981;
    color: #10B981;
}

.form-response.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid #EF4444;
    color: #EF4444;
}

.form-response.info {
    display: block;
    background: rgba(79, 70, 229, 0.1);
    border: 1px solid #4F46E5;
    color: #6366F1;
}

/* === FOOTER === */
.footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-left p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-base);
}

.footer-link:hover {
    color: var(--primary-light);
}

/* === RESPONSIVE === */
@media (max-width: 968px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-visual {
        order: 2;
    }

    .hero-description,
    .hero-stats,
    .hero-cta {
        justify-content: center;
        margin-left: auto;
        margin-right: auto;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-lg);
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        transform: translateY(-120%);
        opacity: 0;
        transition: all var(--transition-base);
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    .skills-categories {
        grid-template-columns: 1fr;
    }

    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* === ANIMATIONS === */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* === SMOOTH SCROLL === */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* === SELECTION === */
::selection {
    background: var(--primary);
    color: white;
}

/* === SCROLLBAR === */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-light), var(--secondary));
}

/* === SOCIAL BUBBLE (CRISP STYLE) === */
.social-bubble-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
}

.social-bubble-trigger {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2), 0 0 0 0 rgba(255, 255, 255, 0.5);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: pulse 2s infinite;
    position: relative;
}

.social-bubble-trigger:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(255, 255, 255, 0.3);
}

.social-bubble-trigger.active {
    background: #EF4444;
    animation: none;
}

.social-bubble-trigger svg {
    position: absolute;
    transition: all 0.3s;
}

.bubble-icon-default {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.bubble-icon-close {
    opacity: 0;
    transform: rotate(180deg) scale(0);
}

.social-bubble-trigger.active .bubble-icon-default {
    opacity: 0;
    transform: rotate(-180deg) scale(0);
}

.social-bubble-trigger.active .bubble-icon-close {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.bubble-notification {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 12px;
    height: 12px;
    background: #EF4444;
    border-radius: 50%;
    border: 2px solid var(--bg-primary);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2), 0 0 0 0 rgba(255, 255, 255, 0.5);
    }
    50% {
        box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2), 0 0 0 10px rgba(255, 255, 255, 0);
    }
}

.social-bubble-menu {
    position: absolute;
    bottom: 75px;
    right: 0;
    width: 300px;
    background: rgba(18, 18, 18, 0.98);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    opacity: 0;
    transform: translateY(20px) scale(0.9);
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.social-bubble-menu.active {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: all;
}

.social-bubble-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.social-bubble-header h3 {
    font-size: 1.1rem;
    margin-bottom: 4px;
    color: var(--primary);
}

.social-bubble-header p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
}

.social-bubble-links {
    padding: 8px;
}

.social-bubble-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s;
    opacity: 0;
    animation: slideInBubble 0.3s ease forwards;
}

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

.social-bubble-link:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(4px);
}

.social-bubble-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    flex-shrink: 0;
    color: var(--primary);
}

.social-bubble-icon svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    fill: none;
}

.social-bubble-name {
    font-size: 0.95rem;
    font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
    .social-bubble-container {
        bottom: 16px;
        right: 16px;
    }

    .social-bubble-trigger {
        width: 56px;
        height: 56px;
    }

    .social-bubble-menu {
        width: calc(100vw - 32px);
        right: -8px;
    }
}