/* styles.css */
:root {
    --primary: #3b82f6;
    --accent: #ef4444;
    --text: #e2e8f0;
    --text-light: #94a3b8;
    --bg: #0f172a;
    --bg-alt: #1e2937;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(16px);
    z-index: 1000;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Hamburger */
.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.hamburger span {
    width: 28px;
    height: 2.5px;
    background: #e0f2fe;
    transition: all 0.4s ease;
}

/* HERO */
.hero {
    height: 520px;
    min-height: 520px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #02050f; /* fallback */
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding-top: 60px;
}

.ocean-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 1;
    opacity: 0.95;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(59, 130, 246, 0.3) 0%, transparent 50%);
    pointer-events: none;
}

.hero-name {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 700;
    line-height: 1.05;
    margin-bottom: 0.5rem;
    background: linear-gradient(90deg, #e0f2fe, #bae6fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-title {
    font-size: 1.75rem;
    color: #bae6fd;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    max-width: 520px;
    margin: 0 auto;
}

/* SECTION */
.section {
    padding: 120px 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    margin-bottom: 3rem;
    text-align: center;
}

.section-header.skills {
    padding-top: 78px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: white;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary);
    border-radius: 3px;
}

.section-content {
    display: flex;
    justify-content: center;
}

/* TIMELINE */
.timeline {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    position: relative;
}

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

.timeline-date {
    font-size: 1.05rem;
    color: var(--text-light);
    font-weight: 500;
    padding-top: 4px;
}

.timeline-content h3 {
    font-size: 1.4rem;
    margin-bottom: 0.25rem;
}

.timeline-content h4 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.timeline-desc {
    color: var(--text-light);
    margin-bottom: 1.25rem;
    font-size: 1.05rem;
}

/* TAGS */
.tags {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
    row-gap: 0.75rem;
}

.tag {
    display: inline-block;
    background: #1e40af;
    color: #bae6fd;
    padding: 6px 14px;
    border-radius: 9999px;
    font-size: 0.9rem;
    margin: 4px 6px 4px 0;
    box-shadow: 0 4px 12px -2px rgba(59, 130, 246, 0.3);
    transition: all 0.3s ease;
}

.tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -4px rgba(239, 68, 68, 0.4);
}

/* SKILLS */
.skills-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    grid-template-rows: 1fr;
    gap: 4rem;
    align-items: center;
}

.skill-category h3 {
    margin-bottom: 1.5rem;
    margin-left: 0.3rem;
    text-align: center;
}

.skill-tags {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    margin: 0 76px;
    justify-content: center;
    gap: 0.4rem;
    row-gap: 0.75rem;
}

.language-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 0 35px;
}

.language-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 2rem;
    background: rgba(148, 163, 184, 0.1);
    border-radius: 12px;
}

.lang-level {
    color: var(--primary);
    font-weight: 500;
}

/* CARDS */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 4rem;
    max-width: 800px;
}

.card {
    background: var(--bg-alt);
    border-radius: 16px;
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(148, 163, 184, 0.1);
}

.card:hover {
    transform: translateY(-12px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px -15px rgba(59, 130, 246, 0.25);
}

.card-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

/* FOOTER */
.footer {
    background: #0a1421;
    padding: 1rem 2rem;
    text-align: center;
    border-top: 1px solid rgba(148, 163, 184, 0.1);
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.agency {
    color: var(--text-light);
    margin-bottom: 0.2rem;
}

.location {
    margin: 0.5rem 0 0.5rem -1.2rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.copyright {
    color: #64748b;
    font-size: 0.95rem;
}

/* RESPONSIVE */
.nav {
    display: flex;
    position: fixed;
    top: 68px;
    right: -100%;               /* Slide from right */
    width: 280px;
    height: calc(100vh - 68px);
    background: rgba(15, 23, 42, 0.98);
    flex-direction: column;
    align-items: center;
    justify-content: start;
    padding-top: 4rem;
    gap: 2.5rem;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
}

.nav a {
    color: #cbd5e1;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav a:hover {
    color: white;
}

.header.menu-open .nav {
    right: 0;
}

.skills-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
}

.timeline-item {
    grid-template-columns: 1fr;
    gap: 1rem;
}

.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(16px);
    z-index: 1000;
    border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -1.5px;
    height: 60px;
    width: auto;
    filter: brightness(1.15) contrast(1.25) drop-shadow(0 2px 8px rgba(0,0,0,0.6)) drop-shadow(0 0 12px rgba(103, 232, 249, 0.55));
    transition: filter 0.4s ease;
}

.logo:hover {
    filter: 
        brightness(1.22) 
        contrast(1.28) 
        drop-shadow(0 3px 10px rgba(0, 0, 0, 0.6))
        drop-shadow(0 0 20px rgba(103, 232, 249, 0.75));
}

/* Ocean Canvas */
.ocean-canvas {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: 1;
    opacity: 0.85;
}

/* Better Skills backdrop */
.bg-alt {
    background: var(--bg);
    position: relative;
    box-shadow: 0 0 35px 35px rgba(148, 163, 184, 0.07),
        inset 0 0 25px 25px rgba(148, 163, 184, 0.07);
}

@media (max-width: 768px) {
    .cards-grid {
        display: grid;
        grid-template-columns: repeat(1, minmax(320px, 1fr));
        gap: 2rem;
        max-width: 800px;
    }
}

/* 2D Ocean Section - Full Width */
.ocean-2d-section {
    background: #02060f;
    padding: 35px 0 0;
    width: 100vw;
    margin-left: calc(50% - 50vw);   /* True full-width */
    position: relative;
}

.ocean-2d-container {
    height: 200px;
    width: 100%;
}

.ocean-2d-canvas {
    width: 100%;
    height: 100%;
    display: block;
    opacity: 0.9;
}