/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */
:root {
    --primary-color: #154D57;
    --primary-dark: #0f3a42;
    --secondary-color: #B7A08B;
    --accent-color: #D4B896;
    --text-primary: #1a1a2e;
    --text-secondary: #555568;
    --text-light: #6b6b82;
    --bg-primary: #FEFAF7;
    --bg-secondary: #F8F4F0;
    --bg-dark: #154D57;
    --border-color: #E8E2DC;

    --font-primary: 'Inter', 'Segoe UI', sans-serif;
    --font-heading: 'Plus Jakarta Sans', 'Inter', sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-2xl: 8rem;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   Dark Mode
   ========================================================================== */
[data-theme="dark"] {
    --primary-color: #5EEAD4;
    --primary-dark: #2DD4BF;
    --secondary-color: #D4B896;
    --accent-color: #D4B896;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-light: #64748B;
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-dark: #020617;
    --border-color: #1E293B;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .hero {
    background: linear-gradient(160deg, #0F172A 0%, #154D57 60%, #0F172A 100%);
}

[data-theme="dark"] .hero-avatar img {
    border-color: rgba(94, 234, 212, 0.3);
}

[data-theme="dark"] .hero .highlight {
    -webkit-text-fill-color: var(--accent-color);
    background: none;
}

[data-theme="dark"] .navbar {
    background-color: rgba(15, 23, 42, 0.9);
    border-bottom-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .hero .btn-primary {
    background-color: white;
    color: #0f3a42;
    border-color: white;
}

[data-theme="dark"] .hero .btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.9);
    color: #0f3a42;
}

[data-theme="dark"] .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .social-links a:hover {
    background-color: var(--primary-color);
    color: var(--bg-primary);
}

[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group textarea:focus {
    box-shadow: 0 0 0 3px rgba(94, 234, 212, 0.15);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }

    .timeline-item, .skill-category, .project-card, .education-item, .stat-item {
        opacity: 1 !important;
        transform: none !important;
    }
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

a:hover {
    color: var(--primary-color);
}

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

ul {
    list-style: none;
}

/* ==========================================================================
   Skip Link
   ========================================================================== */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    z-index: 9999;
    font-weight: 600;
    transition: top var(--transition-fast);
    font-family: var(--font-primary);
}

.skip-link:focus {
    top: 0;
    color: white;
}

/* ==========================================================================
   Loader
   ========================================================================== */
.loader {
    position: fixed;
    inset: 0;
    background-color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.4s ease;
}

.loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-spinner {
    width: 32px;
    height: 32px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

/* ==========================================================================
   Screen Reader Only
   ========================================================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   Focus Visible
   ========================================================================== */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.btn:focus-visible,
.filter-btn:focus-visible,
.nav-link:focus-visible,
.theme-toggle:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.section-title::after {
    content: '';
    display: block;
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 0.75rem auto 0;
    border-radius: var(--radius-full);
}

.about .section-title,
.contact .section-title {
    text-align: left;
}

.about .section-title::after,
.contact .section-title::after {
    margin: 0.75rem 0 0;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    max-width: 500px;
    margin: -2.5rem auto 3rem;
    line-height: 1.7;
}

.section-subtitle--left {
    text-align: left;
    margin: -2.5rem 0 3rem;
    max-width: 500px;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(254, 250, 247, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    border-bottom-color: var(--border-color);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0.875rem;
    padding-bottom: 0.875rem;
}

.nav-brand a {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.04em;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    order: 3;
}

.nav-menu {
    display: flex;
    gap: 0.25rem;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    color: var(--text-secondary);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 1.5px;
    background-color: var(--primary-color);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

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

.nav-link.active::after {
    width: 20px;
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    color: var(--text-light);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

.theme-toggle:hover {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 20px;
    height: 1.5px;
    background-color: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(160deg, #154D57 0%, #1a6672 50%, #154D57 100%);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    margin-top: 56px;
}

.hero-content {
    text-align: center;
    animation: fadeIn 0.8s ease;
    max-width: 720px;
    margin: 0 auto;
}

.hero-avatar {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.hero-avatar img {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 15%;
    border: 3px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: transform 0.4s ease;
}

.hero-avatar img:hover {
    transform: scale(1.05);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.25rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.hero-title .highlight {
    color: var(--accent-color);
    background: linear-gradient(90deg, #D4B896, #B7A08B);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 2px 8px rgba(212, 184, 150, 0.3));
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-description {
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-description strong {
    color: white;
    font-weight: 600;
}

.hero-highlights {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: rgba(255, 255, 255, 0.08);
    padding: 0.625rem 1rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: background-color var(--transition-fast);
}

.highlight-item:hover {
    background-color: rgba(255, 255, 255, 0.14);
}

.highlight-item i {
    font-size: 0.875rem;
    color: var(--accent-color);
}

.highlight-item span {
    font-size: 0.8125rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.95);
    letter-spacing: 0.01em;
}

.hero-cta {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 1.5px solid transparent;
    display: inline-block;
    font-family: var(--font-primary);
    letter-spacing: 0.01em;
}

.btn-primary {
    background-color: white;
    color: var(--primary-color);
    border-color: white;
}

.btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
    color: var(--primary-color);
}

.btn-secondary {
    background-color: transparent;
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    border-color: rgba(255, 255, 255, 0.6);
    background-color: rgba(255, 255, 255, 0.08);
    color: white;
}

.social-links {
    display: flex;
    gap: 0.625rem;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.social-links a {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 50%;
    font-size: 1.125rem;
    transition: all var(--transition-fast);
    color: rgba(255, 255, 255, 0.8);
}

.social-links a:hover {
    background-color: white;
    border-color: white;
    color: var(--primary-color);
    transform: translateY(-2px);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   About
   ========================================================================== */
.about {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-primary);
}

.about-content {
    max-width: 740px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.0625rem;
    line-height: 1.85;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.about-highlight {
    background-color: var(--bg-secondary);
    border-left: 3px solid var(--primary-color);
    padding: 1.25rem 1.5rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: var(--spacing-md) 0;
    font-size: 1.0625rem;
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.7;
    font-style: italic;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    margin-top: var(--spacing-lg);
    background-color: var(--border-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md) var(--spacing-sm);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-fast);
}

.stat-item:hover {
    background-color: var(--bg-secondary);
}

.stat-item h3 {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
    line-height: 1;
}

.stat-item p {
    color: var(--text-light);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

/* ==========================================================================
   Experience
   ========================================================================== */
.experience {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.timeline {
    max-width: 740px;
    margin: 0 auto;
    position: relative;
    padding-left: 32px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 8px;
    bottom: 0;
    width: 1px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-sm);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -29px;
    top: 8px;
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

.timeline-content {
    background-color: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    border-color: transparent;
    border-left: 2px solid var(--primary-color);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.timeline-company {
    font-size: 0.9375rem;
    color: var(--primary-color);
    font-weight: 500;
}

.timeline-period {
    font-size: 0.8125rem;
    color: var(--text-light);
    font-weight: 500;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9375rem;
}

.timeline-description ul {
    list-style: none;
    margin-top: 0.75rem;
}

.timeline-description li {
    margin-bottom: 0.625rem;
    padding-left: 1rem;
    position: relative;
}

.timeline-description li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.65em;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background-color: var(--primary-color);
}

/* ==========================================================================
   Skills
   ========================================================================== */
.skills {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-sm);
}

.skill-category {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    background-color: var(--bg-primary);
}

.skill-category:hover {
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.skill-category h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: -0.01em;
}

.skill-category h3 i {
    font-size: 0.875rem;
    color: var(--primary-color);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.skill-tag {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    background-color: var(--bg-secondary);
    transition: all var(--transition-fast);
    font-weight: 500;
}

.skill-tag:hover {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

/* ==========================================================================
   Projects
   ========================================================================== */
.projects {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.project-filters {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.4375rem 1.125rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
}

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

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr));
    gap: var(--spacing-sm);
}

.project-card {
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal), opacity 0.3s ease, transform 0.3s ease;
}

.project-card.hidden {
    display: none;
}

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

.project-image {
    width: 100%;
    height: 6px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.project-content {
    padding: 1.5rem;
}

.project-card .project-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
    line-height: 1.4;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 0.875rem;
    font-size: 0.875rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-bottom: 0.875rem;
}

.tech-badge {
    background-color: var(--bg-secondary);
    padding: 0.1875rem 0.625rem;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.project-links {
    display: flex;
    gap: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.project-links:empty {
    display: none;
}

.project-badge {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 600;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-full);
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    border: 1px solid var(--border-color);
    letter-spacing: 0.02em;
}

.project-link {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--primary-color);
    font-weight: 500;
    font-size: 0.8125rem;
    transition: opacity var(--transition-fast);
}

.project-link:hover {
    opacity: 0.7;
    color: var(--primary-color);
}

/* ==========================================================================
   Education
   ========================================================================== */
.education {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-primary);
}

.education-content {
    max-width: 740px;
    margin: 0 auto;
}

.education-grid {
    display: grid;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.education-item {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    background-color: var(--bg-primary);
    border-left: 3px solid var(--primary-color);
}

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

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.education-degree {
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.education-school {
    font-size: 0.9375rem;
    color: var(--primary-color);
    font-weight: 500;
}

.education-period {
    font-size: 0.8125rem;
    color: var(--text-light);
    font-weight: 500;
}

.certifications h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
}

.cert-item {
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--primary-color);
    transition: all var(--transition-fast);
}

.cert-item:hover {
    background-color: var(--bg-secondary);
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.contact-content {
    max-width: 740px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-lg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.contact-item:hover {
    background-color: var(--bg-primary);
}

.contact-item i {
    font-size: 1rem;
    color: var(--primary-color);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-primary);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.contact-item h3 {
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.125rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

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

.contact-item a:hover {
    color: var(--primary-color);
}

.contact-form-container {
    background-color: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(21, 77, 87, 0.08);
}

.contact-form .btn {
    width: 100%;
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    margin-top: 0.25rem;
}

.contact-form .btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    color: white;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--border-color);
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    font-size: 0.8125rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
    font-size: 0.8125rem;
}

.footer-links a:hover {
    color: white;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 56px;
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        text-align: center;
        transition: left var(--transition-normal);
        border-bottom: 1px solid var(--border-color);
        padding: var(--spacing-sm) 0;
    }

    .nav-menu.active {
        left: 0;
        z-index: 999;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-avatar img {
        width: 110px;
        height: 110px;
    }

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

    .hero-subtitle {
        font-size: 1.0625rem;
    }

    .hero-description {
        font-size: 0.9375rem;
        padding: 0 var(--spacing-sm);
    }

    .hero-highlights {
        gap: 0.5rem;
    }

    .highlight-item {
        padding: 0.5rem 0.875rem;
    }

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

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

    .hero-cta .btn {
        width: 100%;
        max-width: 280px;
    }

    .timeline {
        padding-left: 24px;
    }

    .timeline::before {
        left: 4px;
    }

    .timeline-item::before {
        left: -23px;
        width: 6px;
        height: 6px;
    }

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

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

    .container {
        padding: 0 var(--spacing-sm);
    }
}

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

    .section-title {
        font-size: 1.5rem;
    }

    .stat-item h3 {
        font-size: 1.75rem;
    }
}