/* ============================================
   CV Djilali SAHRAOUI - Light Theme 4
   Tech-Oriented Professional Theme
   Clear & Recruiter-Friendly
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* CSS Variables */
:root {
    /* Colors - Professional Tech Palette */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0f172a;
    --accent: #06b6d4;

    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-code: #1e293b;

    /* Text */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-light: #ffffff;

    /* Borders */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.1), 0 2px 4px -2px rgba(15, 23, 42, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.1);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --section-padding: 100px 0;
    --container-width: 1200px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
}

.logo-bracket {
    color: var(--primary);
}

.logo-name {
    color: var(--text-primary);
}

.logo-slash {
    color: var(--accent);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary);
    background: var(--bg-secondary);
}

.nav-link.active {
    color: var(--primary);
    background: rgba(37, 99, 235, 0.1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Language Toggle */
.lang-toggle {
    display: flex;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 3px;
    border: 1px solid var(--border-color);
    height: 38px;
    align-items: center;
}

.lang-btn {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 6px 10px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lang-btn:hover {
    color: var(--text-secondary);
}

.lang-btn.active {
    background: var(--primary);
    color: var(--text-light);
}

.btn-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 16px;
    height: 38px;
    background: var(--primary);
    color: var(--text-light);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
}

.btn-nav:hover {
    background: var(--primary-dark);
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 72px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 640px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.9); }
}

.hero-title {
    margin-bottom: 16px;
}

.hero-title .greeting {
    display: block;
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.hero-title .name {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
}

.hero-roles {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.hero-roles .role {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    color: var(--primary);
    font-weight: 600;
}

.hero-roles .role-divider {
    color: var(--text-muted);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.hero-description strong {
    color: var(--text-primary);
    font-weight: 600;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-primary {
    background: var(--primary);
    color: var(--text-light);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

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

.hero-stats {
    display: flex;
    gap: 40px;
}

.hero-stats .stat {
    text-align: center;
}

.hero-stats .stat-value {
    display: block;
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.hero-stats .stat-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
}

.profile-wrapper {
    position: relative;
    width: 100%;
    max-width: 320px;
}

.profile-wrapper img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.profile-tech-badge {
    position: absolute;
    bottom: -16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-primary);
    padding: 10px 20px;
    border-radius: 50px;
    box-shadow: var(--shadow-lg);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    white-space: nowrap;
}

.profile-tech-badge i {
    font-size: 1.25rem;
}

/* Clients Section */
.clients-section {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.clients-title {
    font-size: 0.8125rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 24px;
    text-align: center;
}

.clients-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.client-logo {
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
    filter: grayscale(100%);
    transition: var(--transition-base);
}

.client-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
}

.client-logo img {
    height: 100%;
    width: auto;
    max-width: 120px;
    object-fit: contain;
}

/* Text-based client logos */
.client-logo-text {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    opacity: 0.7;
    transition: var(--transition-base);
}

.client-logo-text:hover {
    opacity: 1;
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.client-logo-text i {
    font-size: 1.25rem;
    color: var(--primary);
}

.client-logo-text .client-name {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* ============================================
   Section Common Styles
   ============================================ */
.section {
    padding: var(--section-padding);
}

.section-header {
    margin-bottom: 60px;
}

.section-header.center {
    text-align: center;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--primary);
    margin-bottom: 12px;
    display: block;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

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

.section-header.center .section-subtitle {
    margin: 0 auto;
}

/* ============================================
   About Section
   ============================================ */
.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 48px;
}

.about-main {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.about-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
}

.about-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.about-card p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.about-card p:last-child {
    margin-bottom: 0;
}

.about-card p strong {
    color: var(--text-primary);
    font-weight: 600;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: var(--transition-base);
}

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

.contact-item i {
    font-size: 1.25rem;
    color: var(--primary);
    width: 20px;
    text-align: center;
}

.contact-item .label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.contact-item .value {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* About Side */
.about-side {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.side-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 24px;
}

.side-card h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.side-card h4 i {
    color: var(--primary);
}

.lang-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.lang-row:last-child {
    margin-bottom: 0;
}

.lang-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    min-width: 70px;
}

.lang-bar {
    flex: 1;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.lang-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 3px;
}

.lang-level {
    font-size: 0.75rem;
    color: var(--text-muted);
    min-width: 60px;
    text-align: right;
}

.interests-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.interests-list span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-secondary);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.interests-list span i {
    color: var(--primary);
}

/* ============================================
   Skills Section
   ============================================ */
.skills {
    background: var(--bg-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.skill-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 24px;
    transition: var(--transition-base);
}

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

.skill-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.skill-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius-lg);
    color: var(--text-light);
    font-size: 1.125rem;
}

.skill-icon.azure { background: #0078d4; }
.skill-icon.devops { background: #0078d4; }
.skill-icon.data { background: #6366f1; }
.skill-icon.backend { background: #512bd4; }
.skill-icon.frontend { background: #f59e0b; }
.skill-icon.security { background: #10b981; }
.skill-icon.methods { background: #8b5cf6; }

.skill-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.skill-tags span {
    font-size: 0.75rem;
    background: var(--bg-primary);
    color: var(--text-secondary);
    padding: 5px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.skill-tags span:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Expertise Section */
.expertise-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 40px;
    border: 1px solid var(--border-color);
}

.expertise-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 32px;
    text-align: center;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.expertise-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

.expertise-header span:first-child {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
}

.expertise-percent {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
}

.expertise-bar {
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.expertise-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 4px;
    width: 0;
    transition: width 1s ease;
}

/* ============================================
   Experience Section
   ============================================ */
.experience {
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

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

.timeline-item {
    position: relative;
    padding-left: 40px;
    padding-bottom: 40px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -6px;
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--primary);
    border: 3px solid var(--bg-secondary);
    border-radius: 50%;
}

.timeline-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 28px;
    transition: var(--transition-base);
}

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

.timeline-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--primary);
    background: rgba(37, 99, 235, 0.1);
    padding: 6px 12px;
    border-radius: var(--radius-md);
}

.timeline-company {
    display: flex;
    align-items: center;
    gap: 10px;
}

.company-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    padding: 6px;
}

.company-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 1rem;
}

.company-icon.microsoft {
    background: rgba(0, 120, 212, 0.1);
    color: #0078d4;
}

.timeline-company span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.timeline-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.timeline-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.timeline-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.timeline-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.timeline-list li::before {
    content: '>';
    font-family: var(--font-mono);
    color: var(--primary);
    font-weight: 600;
    flex-shrink: 0;
}

.timeline-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.timeline-tech span {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

/* ============================================
   Education Section
   ============================================ */
.education {
    background: var(--bg-primary);
}

.education-card {
    max-width: 700px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    display: flex;
    align-items: center;
    gap: 32px;
    transition: var(--transition-base);
}

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

.edu-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius-lg);
    color: var(--text-light);
    font-size: 2rem;
    flex-shrink: 0;
}

.edu-content {
    flex: 1;
}

.edu-date {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--primary);
    background: rgba(37, 99, 235, 0.1);
    padding: 4px 12px;
    border-radius: var(--radius-md);
    display: inline-block;
    margin-bottom: 12px;
}

.edu-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.edu-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.edu-content p i {
    color: var(--text-muted);
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: var(--bg-secondary);
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.contact-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    transition: var(--transition-base);
}

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

.contact-card i {
    display: block;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.contact-card h4 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact-card p {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    word-break: break-word;
}

/* Contact Form */
.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}

/* Form validation states */
.form-group input.invalid,
.form-group textarea.invalid {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.05);
}

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

/* Success message */
.form-success-message {
    max-width: 700px;
    margin: 0 auto 24px;
    padding: 32px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
    border: 1px solid #10b981;
    border-radius: var(--radius-xl);
    text-align: center;
    animation: fadeInUp 0.5s ease-out;
}

.form-success-message i {
    font-size: 3rem;
    color: #10b981;
    margin-bottom: 16px;
}

.form-success-message h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-success-message p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--secondary);
    color: var(--text-light);
    padding: 48px 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.footer-logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
}

.footer-brand p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-light);
    font-size: 1.125rem;
    transition: var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary);
}

.footer-copy {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--text-light);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* ============================================
   Animations
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

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

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

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

    .hero-visual {
        order: -1;
    }

    .profile-wrapper {
        max-width: 280px;
        margin: 0 auto;
    }

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

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

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

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

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 0;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-base);
    }

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

    .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(5px, -5px);
    }

    .hero-title .name {
        font-size: 2.5rem;
    }

    .hero-roles {
        flex-direction: column;
        gap: 8px;
    }

    .hero-roles .role-divider {
        display: none;
    }

    .hero-cta {
        flex-direction: column;
        gap: 12px;
    }

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

    .hero-stats {
        gap: 24px;
    }

    .clients-logos {
        gap: 24px;
    }

    .client-logo {
        height: 28px;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

    .timeline::before {
        left: 6px;
    }

    .timeline-marker {
        left: 0;
    }

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .education-card {
        flex-direction: column;
        text-align: center;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title .name {
        font-size: 2rem;
    }

    .hero-stats {
        flex-wrap: wrap;
    }

    .timeline-content {
        padding: 20px;
    }

    .contact-form {
        padding: 24px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}