/* ============================================================
   LESYA SHKOLNA — QA PORTFOLIO | style.css
   Dual Theme System: Premium Paper (light) + Dark Copper (dark)
   ============================================================ */

/* ===== CSS VARIABLES ===== */
:root {
    /* Light Theme — Premium Paper */
    --bg:             #F9F8F6;
    --surface:        #FFFFFF;
    --surface-alt:    #F4F3F1;
    --primary:        #A67C52;
    --primary-hover:  #8B6340;
    --primary-light:  rgba(166, 124, 82, 0.12);
    --primary-glow:   rgba(166, 124, 82, 0.25);
    --text:           #1E1E21;
    --text-secondary: #6B6B6B;
    --text-muted:     #9B9B9B;
    --border:         #E5E5E5;
    --border-focus:   #A67C52;
    --navy:           #1A365D;
    --success:        #22C55E;
    --success-light:  rgba(34, 197, 94, 0.15);

    --shadow-xs: 0 1px 2px rgba(30,30,33,.04);
    --shadow-sm: 0 2px 4px rgba(30,30,33,.06);
    --shadow-md: 0 4px 12px rgba(30,30,33,.10);
    --shadow-lg: 0 12px 24px rgba(30,30,33,.12);
    --shadow-xl: 0 24px 48px rgba(30,30,33,.16);

    --font-sans:  'Inter', system-ui, -apple-system, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

    --radius-sm:  0.375rem;
    --radius-md:  0.75rem;
    --radius-lg:  1rem;
    --radius-xl:  1.5rem;
    --radius-full: 9999px;

    --transition: 0.2s ease;
    --transition-slow: 0.4s ease;
}

.dark-theme {
    /* Dark Theme — Dark Copper */
    --bg:             #0B0F19;
    --surface:        #111827;
    --surface-alt:    #1F2937;
    --primary:        #C97556;
    --primary-hover:  #D88A6D;
    --primary-light:  rgba(201, 117, 86, 0.14);
    --primary-glow:   rgba(201, 117, 86, 0.30);
    --text:           #F9FAFB;
    --text-secondary: #D1D5DB;
    --text-muted:     #9CA3AF;
    --border:         #374151;
    --border-focus:   #C97556;
    --navy:           #60A5FA;
    --success:        #22C55E;
    --success-light:  rgba(34, 197, 94, 0.12);

    --shadow-xs: 0 1px 2px rgba(0,0,0,.20);
    --shadow-sm: 0 2px 4px rgba(0,0,0,.30);
    --shadow-md: 0 4px 12px rgba(0,0,0,.40);
    --shadow-lg: 0 12px 24px rgba(0,0,0,.50);
    --shadow-xl: 0 24px 48px rgba(0,0,0,.60);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.65;
    transition: background-color var(--transition-slow), color var(--transition-slow);
    min-height: 100vh;
    overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

section { padding: 5rem 0; }

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 3rem;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
    margin: 0.75rem auto 0;
}

/* ===== LOADING SCREEN ===== */
.loading-screen {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--bg);
    transition: opacity 0.5s ease, visibility 0.5s ease;
    gap: 1.5rem;
}

.loading-screen.fade-out {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loading-logo {
    width: 100px;
    height: 100px;
    position: relative;
}

.loading-logo svg {
    width: 100%;
    height: 100%;
}

.loading-logo .logo-path {
    stroke: var(--primary);
    stroke-dasharray: 600;
    stroke-dashoffset: 600;
    animation: drawLogo 1.8s ease-in-out forwards;
}

.loading-logo .logo-path:nth-child(2) {
    animation-delay: 0.4s;
}

.pulse-ring {
    position: absolute;
    inset: -10px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    opacity: 0;
    animation: pulseRing 2s ease-in-out 0.5s infinite;
}

@keyframes drawLogo {
    to { stroke-dashoffset: 0; }
}

@keyframes pulseRing {
    0%   { transform: scale(0.85); opacity: 0.6; }
    80%, 100% { transform: scale(1.4); opacity: 0; }
}

.progress-bar {
    width: 180px;
    height: 3px;
    background: var(--border);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-hover));
    border-radius: var(--radius-full);
    width: 0%;
    transition: width 0.08s linear;
}

.loading-text {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(249, 248, 246, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition-slow), box-shadow var(--transition);
}

.dark-theme .header {
    background: rgba(11, 15, 25, 0.88);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--text);
    transition: opacity var(--transition);
}

.logo:hover { opacity: 0.8; }

.logo-icon {
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--primary);
    border-radius: var(--radius-sm);
    background: var(--surface);
    font-family: var(--font-serif);
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--primary);
    flex-shrink: 0;
}

.logo-text {
    font-weight: 600;
    font-size: 0.9375rem;
}

.nav-desktop {
    display: none;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 768px) { .nav-desktop { display: flex; } }

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0; right: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
    transform: scaleX(0);
    transition: transform var(--transition);
}

.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { transform: scaleX(1); }

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-icon {
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text);
    transition: all var(--transition);
    flex-shrink: 0;
}

.btn-icon:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

/* Theme toggle icons */
.dark-theme .icon-moon { display: none; }
.light-theme .icon-sun { display: none; }

.lang-switcher {
    padding: 0.3125rem 0.625rem;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    background: var(--surface);
    transition: all var(--transition);
    letter-spacing: 0.04em;
}

.lang-switcher:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.hire-btn-header {
    display: none;
    padding: 0.4375rem 1rem;
    border: 2px solid var(--primary);
    border-radius: var(--radius-sm);
    color: var(--primary);
    font-size: 0.8125rem;
    font-weight: 600;
    transition: all var(--transition);
}

@media (min-width: 640px) { .hire-btn-header { display: inline-flex; } }

.hire-btn-header:hover {
    background: var(--primary);
    color: #fff;
}

.menu-toggle {
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: none;
    color: var(--text);
}

@media (min-width: 768px) { .menu-toggle { display: none; } }

/* Show/hide icons inside toggle */
.menu-toggle .icon-close { display: none; }
.menu-toggle.open .icon-menu { display: none; }
.menu-toggle.open .icon-close { display: block; }

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem 1.5rem 1.25rem;
    background: var(--bg);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.mobile-menu.active { display: flex; }
.mobile-menu .nav-link { padding: 0.625rem 0; font-size: 1rem; }

/* ===== HERO ===== */
.hero {
    padding-top: 7.5rem;
    padding-bottom: 5rem;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr 1fr; }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 1rem;
    background: var(--primary-light);
    border: 1px solid rgba(166,124,82,.25);
    color: var(--primary);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 1.25rem;
}

.badge-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--success);
    animation: blink 1.5s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.3; }
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.25rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1rem;
    color: var(--text);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    font-weight: 500;
}

.hero-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1rem;
    line-height: 1.75;
    max-width: 520px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8125rem 1.625rem;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    border: none;
    transition: all var(--transition);
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px var(--primary-glow);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8125rem 1.625rem;
    border: 2px solid var(--text);
    color: var(--text);
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    background: transparent;
    transition: all var(--transition);
    cursor: pointer;
}

.btn-secondary:hover {
    background: var(--text);
    color: var(--bg);
    transform: translateY(-2px);
}

.hero-social {
    display: flex;
    gap: 0.75rem;
}

.social-link {
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: all var(--transition);
}

.social-link:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-2px);
}

/* Hero image */
.hero-image-wrapper {
    position: relative;
    display: none;
}

@media (min-width: 1024px) { .hero-image-wrapper { display: block; } }

.hero-image {
    aspect-ratio: 4/5;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 2px solid var(--border);
    background: var(--surface);
    position: relative;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    transition: transform 0.6s ease;
}

.hero-image:hover img { transform: scale(1.03); }

.hero-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(166,124,82,.15) 100%);
    pointer-events: none;
}

.hero-image-decoration-1,
.hero-image-decoration-2 {
    position: absolute;
    width: 10rem;
    height: 10rem;
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    opacity: 0.25;
    z-index: -1;
}

.hero-image-decoration-1 { bottom: -1.25rem; left: -1.25rem; }
.hero-image-decoration-2 { top: -1.25rem; right: -1.25rem; }

.hero-image-badge {
    position: absolute;
    bottom: 1.5rem;
    left: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    background: var(--success-light);
    border: 1px solid rgba(34,197,94,.3);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    color: #16a34a;
    backdrop-filter: blur(8px);
}

.dark-theme .hero-image-badge { color: #4ade80; }

.hero-image-badge svg { color: var(--success); }

/* ===== METRICS ===== */
.metrics {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

@media (min-width: 1024px) {
    .metrics-grid { grid-template-columns: repeat(4, 1fr); }
}

.metric-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.75rem 1.25rem;
    text-align: center;
    transition: all var(--transition);
}

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

.metric-value {
    font-size: 2.25rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--primary);
    margin-bottom: 0.375rem;
    line-height: 1;
}

.metric-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ===== SKILLS ===== */
.skills-grid {
    display: grid;
    gap: 1.25rem;
    margin-bottom: 2.5rem;
}

@media (min-width: 640px)  { .skills-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .skills-grid { grid-template-columns: repeat(4, 1fr); } }

.skill-category {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: all var(--transition);
}

.skill-category:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.skill-category-title {
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 1rem;
    color: var(--primary);
    font-family: var(--font-mono);
}

.skill-list { display: flex; flex-direction: column; gap: 0.5rem; }

.skill-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.skill-check {
    width: 14px; height: 14px;
    color: var(--primary);
    flex-shrink: 0;
}

.skills-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    justify-content: center;
}

.skill-badge {
    padding: 0.375rem 0.875rem;
    background: var(--primary-light);
    border: 1px solid rgba(166,124,82,.2);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--primary);
    transition: all var(--transition);
}

.skill-badge:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ===== CERTIFICATIONS ===== */
.certifications {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

@media (min-width: 768px) { .cert-grid { grid-template-columns: repeat(4, 1fr); } }

.cert-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.875rem;
    padding: 2rem 1.25rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition);
}

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

.cert-icon {
    width: 44px; height: 44px;
    color: var(--primary);
}

.cert-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    line-height: 1.4;
}

/* ===== EXPERIENCE ===== */
.experience-timeline {
    position: relative;
    padding-left: 2.5rem;
}

.experience-timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), transparent);
    border-radius: 1px;
}

.experience-item {
    position: relative;
    margin-bottom: 2.5rem;
}

.experience-item:last-child { margin-bottom: 0; }

.experience-marker {
    position: absolute;
    left: -2.125rem;
    top: 0.4rem;
    width: 1rem; height: 1rem;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 2px var(--primary);
}

.experience-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

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

.experience-header {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    margin-bottom: 1rem;
}

@media (min-width: 640px) {
    .experience-header { flex-direction: row; align-items: flex-start; justify-content: space-between; }
}

.experience-company {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text);
}

.experience-period {
    font-size: 0.8125rem;
    font-family: var(--font-mono);
    color: var(--primary);
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.experience-position {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1rem;
}

.experience-list { display: flex; flex-direction: column; gap: 0.625rem; }

.experience-resp {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.resp-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--primary);
    margin-top: 0.45rem;
    flex-shrink: 0;
}

/* ===== PROJECTS ===== */
.projects-grid {
    display: grid;
    gap: 1.25rem;
}

@media (min-width: 768px)  { .projects-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .projects-grid { grid-template-columns: repeat(3, 1fr); } }

.project-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    transition: all var(--transition);
}

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

.project-icon {
    width: 2.75rem; height: 2.75rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.project-icon svg {
    width: 22px; height: 22px;
    color: var(--primary);
}

.project-name {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.project-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    flex-grow: 1;
    line-height: 1.65;
}

.project-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.project-tag {
    padding: 0.25rem 0.5625rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.project-result {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--navy);
}

/* ===== LANGUAGES ===== */
.languages-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.25rem;
}

.language-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
    min-width: 200px;
}

.language-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.language-icon { width: 30px; height: 30px; color: var(--primary); }
.language-name { font-weight: 700; color: var(--text); font-size: 1rem; }
.language-level { font-size: 0.8125rem; color: var(--text-secondary); margin-top: 0.125rem; }

/* ===== AVAILABILITY ===== */
.availability {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    text-align: center;
}

.availability-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.availability-item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6875rem 1.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text);
    transition: all var(--transition);
}

.availability-item:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-2px);
}

.availability-check {
    width: 18px; height: 18px;
    color: var(--success);
    flex-shrink: 0;
}

/* ===== CONTACT ===== */
.contact-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.0625rem;
    margin-bottom: 3rem;
    margin-top: -1.5rem;
}

.contact-grid {
    display: grid;
    gap: 1.25rem;
    margin-bottom: 2.5rem;
}

@media (min-width: 768px) { .contact-grid { grid-template-columns: repeat(3, 1fr); } }

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.625rem;
    padding: 2rem 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: inherit;
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

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

.contact-icon {
    width: 36px; height: 36px;
    color: var(--primary);
}

.contact-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.contact-value {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text);
    text-align: center;
    word-break: break-all;
    transition: color var(--transition);
}

.contact-value.copied { color: var(--success); }

.contact-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.contact-cta {
    text-align: center;
}

.hire-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    padding: 1rem 2.5rem;
    background: var(--navy);
    color: #fff;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.hire-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 2.5rem 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
}

@media (min-width: 768px) { .footer-content { flex-direction: row; } }

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.footer-logo-icon {
    width: 1.875rem; height: 1.875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--primary);
    border-radius: var(--radius-sm);
    background: var(--bg);
    font-family: var(--font-serif);
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--primary);
}

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

.footer-built {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-heart {
    width: 14px; height: 14px;
    color: var(--primary);
    fill: var(--primary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 767px) {
    section { padding: 3.5rem 0; }
    .section-title { font-size: 1.625rem; margin-bottom: 2rem; }
    .hero { padding-top: 6.5rem; padding-bottom: 3.5rem; }
    .hero-buttons { flex-direction: column; }
    .btn-primary, .btn-secondary { justify-content: center; }
    .experience-timeline { padding-left: 1.75rem; }
    .experience-timeline::before { left: 0.25rem; }
    .experience-marker { left: -1.625rem; }
}

/* ===== SCROLL TO TOP BUTTON ===== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 2.75rem;
    height: 2.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
    z-index: 80;
}

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

.scroll-top:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

/* ===== PRINT ===== */
@media print {
    .header, .loading-screen, .scroll-top, .hero-buttons { display: none !important; }
    body { background: #fff; color: #000; }
    section { padding: 1.5rem 0; }
}