/* ===== CSS VARIABLES & DESIGN TOKENS ===== */
:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: #1a1f2e;
    --bg-card-hover: #222842;
    --bg-glass: rgba(17, 24, 39, 0.8);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent-primary: #06b6d4;
    --accent-secondary: #0ea5e9;
    --accent-gradient: linear-gradient(135deg, #06b6d4, #0ea5e9, #3b82f6);
    --accent-glow: rgba(6, 182, 212, 0.3);
    --accent-glow-strong: rgba(6, 182, 212, 0.5);

    --border-color: rgba(148, 163, 184, 0.1);
    --border-glow: rgba(6, 182, 212, 0.2);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(6, 182, 212, 0.15);

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: rgba(6, 182, 212, 0.3);
    color: var(--text-primary);
}

/* ===== PARTICLE CANVAS ===== */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== NAVIGATION ===== */
#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition-smooth);
    background: transparent;
}

#main-nav.scrolled {
    background: rgba(10, 14, 23, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-primary);
    letter-spacing: 1px;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 2px;
    transition: var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    transform: translateX(-50%) scaleX(1);
}

/* Language Toggle */
.lang-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: 50px;
    padding: 6px 14px;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    margin-left: 12px;
    flex-shrink: 0;
}

.lang-toggle:hover {
    background: rgba(6, 182, 212, 0.15);
    border-color: var(--accent-primary);
    box-shadow: 0 0 16px rgba(6, 182, 212, 0.15);
}

.lang-option {
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 1px;
    transition: var(--transition-fast);
    padding: 2px 4px;
    border-radius: 4px;
}

.lang-option.active {
    color: var(--accent-primary);
    background: rgba(6, 182, 212, 0.15);
    text-shadow: 0 0 8px rgba(6, 182, 212, 0.4);
}

.lang-separator {
    color: var(--text-muted);
    opacity: 0.4;
    font-weight: 300;
}

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

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

.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 SECTION ===== */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 24px 160px;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(59, 130, 246, 0.06) 0%, transparent 50%);
    animation: heroGlow 12s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(-2%, -2%) rotate(3deg); }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
}

/* Avatar */
.hero-avatar-wrapper {
    position: relative;
    width: 140px;
    height: 140px;
    margin: 0 auto 32px;
}

.hero-avatar {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(6, 182, 212, 0.4);
    box-shadow: 0 0 40px rgba(6, 182, 212, 0.2);
    position: relative;
    z-index: 1;
}

.avatar-ring {
    position: absolute;
    top: -6px;
    left: -6px;
    right: -6px;
    bottom: -6px;
    border-radius: 50%;
    border: 2px solid transparent;
    border-top-color: var(--accent-primary);
    border-right-color: var(--accent-secondary);
    animation: ringRotate 4s linear infinite;
}

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

/* Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: 50px;
    padding: 8px 20px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-primary);
    margin-bottom: 28px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

/* Title */
.hero-title {
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-greeting {
    display: block;
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--text-secondary);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.hero-name {
    display: block;
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.hero-surname {
    display: block;
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

/* Typewriter */
.hero-typewriter {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--accent-primary);
    margin-bottom: 24px;
    min-height: 28px;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.typewriter-prefix {
    color: var(--text-muted);
}

.typewriter-cursor {
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto 36px;
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

/* CTA Buttons */
.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 52px;
    animation: fadeInUp 0.8s ease-out 1s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
    font-family: var(--font-sans);
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--accent-glow-strong);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-glow);
}

.btn-secondary:hover {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--accent-primary);
    transform: translateY(-3px);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.05rem;
}

/* Stats */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    animation: fadeInUp 0.8s ease-out 1.2s both;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: inline-block;
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-plus {
    display: inline-block;
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-left: 2px;
}

.stat-label {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: fadeInUp 0.8s ease-out 1.5s both;
}

.scroll-indicator span {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--text-muted);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent-primary), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ===== SECTION COMMONS ===== */
section {
    position: relative;
    z-index: 1;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-primary);
    display: block;
    margin-bottom: 12px;
    opacity: 0.8;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-line {
    width: 60px;
    height: 3px;
    background: var(--accent-gradient);
    margin: 0 auto 16px;
    border-radius: 3px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto;
}

/* ===== ABOUT SECTION ===== */
#about {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

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

.about-text .about-intro {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

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

.about-details {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.detail-item svg {
    color: var(--accent-primary);
    flex-shrink: 0;
}

/* Terminal Card */
.terminal-window {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

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

.dot.red { background: #ef4444; }
.dot.yellow { background: #eab308; }
.dot.green { background: #22c55e; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.terminal-body {
    padding: 20px;
}

.terminal-body pre {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.8;
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.json-key { color: #7dd3fc; }
.json-string { color: #86efac; }

/* ===== SKILLS SECTION ===== */
#skills {
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: var(--transition-smooth);
}

.skill-category:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.skill-category:hover::before {
    transform: scaleX(1);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.skill-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: rgba(6, 182, 212, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    flex-shrink: 0;
}

.skill-category h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    padding: 6px 14px;
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.skill-tag:hover {
    background: rgba(6, 182, 212, 0.15);
    color: var(--accent-primary);
    border-color: rgba(6, 182, 212, 0.3);
}

/* ===== CERTIFICATES SECTION ===== */
#certificates {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.cert-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.cert-card-glow {
    position: absolute;
    top: -100px;
    right: -100px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.06) 0%, transparent 70%);
    transition: var(--transition-smooth);
}

.cert-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
}

.cert-card:hover .cert-card-glow {
    transform: scale(1.5);
    background: radial-gradient(circle, rgba(6, 182, 212, 0.12) 0%, transparent 70%);
}

.cert-icon {
    color: var(--accent-primary);
    margin-bottom: 20px;
    opacity: 0.8;
}

.cert-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 14px;
    align-self: flex-start;
}

.cert-badge.samsung { background: rgba(34, 76, 145, 0.2); color: #60a5fa; border: 1px solid rgba(34, 76, 145, 0.3); }
.cert-badge.tecnm { background: rgba(220, 38, 38, 0.15); color: #f87171; border: 1px solid rgba(220, 38, 38, 0.25); }
.cert-badge.security { background: rgba(234, 179, 8, 0.15); color: #facc15; border: 1px solid rgba(234, 179, 8, 0.25); }
.cert-badge.cisco { background: rgba(6, 182, 212, 0.15); color: #22d3ee; border: 1px solid rgba(6, 182, 212, 0.25); }
.cert-badge.ucg { background: rgba(59, 130, 246, 0.15); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.25); }
.cert-badge.cloud { background: rgba(168, 85, 247, 0.15); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.25); }
.cert-badge.udemy { background: rgba(168, 85, 247, 0.15); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.25); }
.cert-badge.general { background: rgba(6, 182, 212, 0.15); color: #22d3ee; border: 1px solid rgba(6, 182, 212, 0.25); }

.cert-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.cert-issuer {
    font-size: 0.85rem;
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: 10px;
}

.cert-description {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 16px;
    flex-grow: 1;
}

.cert-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.cert-view-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: var(--transition-fast);
    align-self: flex-start;
}

.cert-view-btn:hover {
    background: rgba(6, 182, 212, 0.2);
    border-color: var(--accent-primary);
    transform: translateX(4px);
}

/* ===== RECOMMENDATIONS SECTION ===== */
#recommendations {
    background: var(--bg-primary);
}

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

.rec-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    position: relative;
    transition: var(--transition-smooth);
}

.rec-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.rec-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.rec-quote-icon {
    color: var(--accent-primary);
    opacity: 0.2;
    margin-bottom: 20px;
}

.rec-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
}

.rec-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 24px;
}

.rec-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--accent-gradient);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.rec-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

/* ===== CV SECTION ===== */
#cv {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.cv-showcase {
    display: flex;
    justify-content: center;
}

.cv-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 60px;
    text-align: center;
    max-width: 560px;
    width: 100%;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.cv-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(6, 182, 212, 0.04) 0%, transparent 60%);
}

.cv-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.cv-icon-wrapper {
    color: var(--accent-primary);
    margin-bottom: 24px;
    opacity: 0.6;
}

.cv-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
}

.cv-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    line-height: 1.7;
}

.cv-file-info {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 28px;
}

.cv-file-type,
.cv-file-size {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
    background: rgba(100, 116, 139, 0.1);
    padding: 4px 12px;
    border-radius: 50px;
}

/* ===== CONTACT SECTION ===== */
#contact {
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    transition: var(--transition-smooth);
}

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

.contact-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(6, 182, 212, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--accent-primary);
}

.contact-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.contact-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-email-link {
    display: inline-block;
    margin-top: 12px;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--accent-primary);
    text-decoration: none;
    padding: 6px 16px;
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: 50px;
    transition: var(--transition-fast);
}

.contact-email-link:hover {
    background: rgba(6, 182, 212, 0.18);
    border-color: var(--accent-primary);
    box-shadow: 0 0 16px rgba(6, 182, 212, 0.2);
    transform: translateY(-2px);
}

/* ===== FOOTER ===== */
#footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 48px 24px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.8rem;
    opacity: 0.6;
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 900px;
    max-height: 85vh;
    overflow: hidden;
    position: relative;
    transform: scale(0.9) translateY(20px);
    transition: var(--transition-bounce);
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: rgba(239, 68, 68, 0.3);
    border-color: rgba(239, 68, 68, 0.5);
}

.modal-body {
    padding: 20px;
    overflow: auto;
    max-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-body img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.modal-body iframe {
    width: 100%;
    height: 80vh;
    border: none;
    border-radius: var(--radius-sm);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-card);
        border-left: 1px solid var(--border-color);
        flex-direction: column;
        padding: 80px 24px 24px;
        transition: var(--transition-smooth);
        z-index: 999;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1rem;
        padding: 12px 16px;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .lang-toggle {
        margin-left: auto;
        margin-right: 12px;
        z-index: 1001;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

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

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

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

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .cv-card {
        padding: 40px 28px;
    }

    .hero-name {
        font-size: 2.2rem;
    }

    .hero-surname {
        font-size: 1.8rem;
    }

    .modal-content {
        width: 95%;
    }
}

@media (max-width: 480px) {
    .section-container {
        padding: 64px 16px;
    }

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

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

    .cert-card {
        padding: 24px 20px;
    }

    .rec-card {
        padding: 28px 24px;
    }
}