/* ======================================================
   PHONG PT — Cyber Bento Portfolio
   Unique design: bento grid + neon cyber aesthetic
   ====================================================== */

/* --- Fonts --- */
:root {
    --ff-code: 'Fira Code', monospace;
    --ff-sans: 'Inter', sans-serif;
    --speed: 0.35s;
    --radius: 16px;
    --radius-sm: 10px;
}

/* === DARK === */
.dark-theme {
    --bg: #05080f;
    --bg2: #0a0f1a;
    --surface: #0d1220;
    --surface2: #111827;
    --border: #1b2540;
    --border-hover: #00e5a0;
    --text1: #e4e8f1;
    --text2: #8892a8;
    --text3: #4f5a72;
    --accent: #00e5a0;
    --accent2: #00b8d4;
    --glow: rgba(0, 229, 160, 0.08);
    --glow-strong: rgba(0, 229, 160, 0.18);
    --shadow: 0 4px 30px rgba(0,0,0,0.5);
    --grid-color: rgba(27, 37, 64, 0.5);
    --ring: conic-gradient(#00e5a0, #00b8d4, #7c3aed, #00e5a0);
}

/* === LIGHT === */
.light-theme {
    --bg: #f4f6fa;
    --bg2: #edf0f7;
    --surface: #ffffff;
    --surface2: #f0f2f8;
    --border: #d4d9e6;
    --border-hover: #0d9668;
    --text1: #1a1e2e;
    --text2: #5a6178;
    --text3: #9098ad;
    --accent: #0d9668;
    --accent2: #0284a8;
    --glow: rgba(13, 150, 104, 0.06);
    --glow-strong: rgba(13, 150, 104, 0.12);
    --shadow: 0 4px 24px rgba(0,0,0,0.08);
    --grid-color: rgba(212, 217, 230, 0.6);
    --ring: conic-gradient(#0d9668, #0284a8, #6d28d9, #0d9668);
}

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--ff-sans);
    background: var(--bg);
    color: var(--text1);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 28px 16px 60px;
    transition: background var(--speed), color var(--speed);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    position: relative;
}

::selection { background: var(--accent); color: var(--bg); }
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* === ANIMATED BG === */
.bg-grid {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background-image:
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.5;
}

.bg-glow {
    position: fixed; z-index: 0; pointer-events: none;
    width: 600px; height: 600px;
    top: -120px; right: -100px;
    background: radial-gradient(circle, var(--glow-strong) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    transition: background var(--speed);
}

/* === SHELL === */
.shell {
    position: relative; z-index: 1;
    width: 100%; max-width: 920px;
    display: flex; flex-direction: column; gap: 14px;
    animation: shellIn 0.55s ease-out;
}

@keyframes shellIn {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

/* === TOPBAR === */
.topbar {
    display: flex; justify-content: space-between; align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 20px;
    box-shadow: var(--shadow);
    transition: all var(--speed);
}

.topbar-left {
    display: flex; align-items: center; gap: 10px;
    font-family: var(--ff-code); font-size: 0.88rem; color: var(--accent);
}

.prompt-symbol { font-weight: 700; font-size: 1rem; }

.topbar-path { color: var(--text2); }
.topbar-path .blink {
    animation: cursorBlink 1s step-end infinite;
    color: var(--accent);
}

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

.topbar-right {
    display: flex; align-items: center; gap: 12px;
}

.status-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.status-text {
    font-family: var(--ff-code); font-size: 0.75rem;
    color: var(--text3); text-transform: uppercase; letter-spacing: 0.08em;
}

.theme-btn {
    background: var(--surface2); border: 1px solid var(--border);
    color: var(--text2); width: 34px; height: 34px;
    border-radius: 50%; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.9rem; transition: all var(--speed);
}

.theme-btn:hover {
    border-color: var(--accent); color: var(--accent);
    box-shadow: 0 0 12px var(--glow);
    transform: rotate(20deg);
}

/* === BENTO GRID === */
.bento {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
}

/* === TILES (cards) === */
.tile {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
    transition: all var(--speed);
    animation: tileIn 0.5s ease-out both;
}

.tile:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow), 0 0 20px var(--glow);
}

@keyframes tileIn {
    from { opacity: 0; transform: translateY(12px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.tile-header {
    margin-bottom: 16px; padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.tile-header h2 {
    font-family: var(--ff-code); font-size: 0.92rem; font-weight: 600;
    color: var(--text2); display: flex; align-items: center; gap: 8px;
}

.tile-header h2 i { color: var(--accent); font-size: 0.85rem; }

/* === GRID SPANS === */
.tile-hero     { grid-column: 1 / -1; animation-delay: 0.05s; }
.tile-about    { grid-column: 1 / 4; animation-delay: 0.12s; }
.tile-links    { grid-column: 4 / 7; animation-delay: 0.18s; }
.tile-exp      { grid-column: 1 / 4; animation-delay: 0.24s; }
.tile-projects { grid-column: 4 / 7; animation-delay: 0.30s; }
.tile-quote    { grid-column: 1 / -1; animation-delay: 0.36s; }

/* === HERO === */
.tile-hero {
    display: flex; align-items: center; gap: 28px;
    padding: 28px 32px;
    background: linear-gradient(135deg, var(--surface) 60%, var(--glow-strong));
}

.hero-avatar { position: relative; flex-shrink: 0; }

.avatar {
    width: 100px; height: 100px; border-radius: 50%;
    object-fit: cover; position: relative; z-index: 1;
    border: 3px solid var(--surface);
}

.avatar-ring {
    position: absolute; inset: -5px;
    border-radius: 50%;
    background: var(--ring);
    z-index: 0;
    animation: ringRotate 4s linear infinite;
}

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

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

.hero-name {
    font-family: var(--ff-code); font-size: 1.65rem; font-weight: 700;
    letter-spacing: -0.03em;
    background: linear-gradient(90deg, var(--text1), var(--accent));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: 0.88rem; color: var(--text2); font-weight: 400;
}

.hero-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }

.chip {
    font-family: var(--ff-code); font-size: 0.72rem;
    padding: 5px 12px; border-radius: 20px;
    background: var(--surface2); border: 1px solid var(--border);
    color: var(--text2); display: flex; align-items: center; gap: 6px;
    transition: all var(--speed);
}

.chip i { color: var(--accent); font-size: 0.65rem; }
.chip:hover { border-color: var(--accent); color: var(--text1); }

/* === ABOUT === */
.about-body {
    font-size: 0.85rem; color: var(--text2);
    display: flex; flex-direction: column; gap: 8px; line-height: 1.65;
}

.about-body strong { color: var(--text1); font-weight: 600; }

/* === LINKS GRID === */
.link-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
}

.link-item {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 14px;
    background: var(--surface2); border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text2); text-decoration: none;
    font-family: var(--ff-code); font-size: 0.82rem;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative; overflow: hidden;
}

.link-item::after {
    content: ''; position: absolute; left: 0; bottom: 0;
    width: 100%; height: 2px;
    background: var(--accent);
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.3s ease;
}

.link-item:hover::after { transform: scaleX(1); }

.link-item:hover {
    border-color: var(--accent); color: var(--text1);
    background: var(--glow);
    transform: translateY(-2px);
}

.link-item i {
    font-size: 1.05rem; width: 20px; text-align: center;
    transition: color var(--speed);
}

.link-item:hover i { color: var(--accent); }

/* === EXPERIENCE === */
.exp-list {
    display: flex; flex-direction: column; gap: 18px;
}

.exp-item {
    display: flex; gap: 14px; position: relative;
}

.exp-dot {
    width: 10px; height: 10px; border-radius: 50%;
    border: 2px solid var(--accent); background: var(--surface);
    flex-shrink: 0; margin-top: 5px;
    transition: all 0.3s;
}

.exp-item:hover .exp-dot {
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent);
}

.exp-item:not(:last-child)::before {
    content: ''; position: absolute;
    left: 4px; top: 18px;
    width: 2px; height: calc(100% - 2px);
    background: var(--border);
}

.exp-content { display: flex; flex-direction: column; gap: 2px; }

.exp-date {
    font-family: var(--ff-code); font-size: 0.7rem;
    color: var(--text3); letter-spacing: 0.04em;
}

.exp-content h3 {
    font-size: 0.92rem; font-weight: 700; color: var(--text1);
}

.exp-role {
    font-size: 0.82rem; color: var(--accent); font-weight: 500;
}

.exp-desc {
    font-size: 0.78rem; color: var(--text3); line-height: 1.5; margin-top: 2px;
}

/* === PROJECTS === */
.project-cards {
    display: flex; flex-direction: column; gap: 10px;
}

.proj-card {
    padding: 16px; border: 1px solid var(--border);
    border-radius: var(--radius-sm); background: var(--surface2);
    display: flex; flex-direction: column; gap: 6px;
    transition: all 0.3s ease;
}

.proj-card:hover {
    border-color: var(--accent); transform: translateY(-2px);
    box-shadow: 0 0 15px var(--glow);
}

.proj-top {
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.72rem; color: var(--text3);
}

.proj-top i { font-size: 0.95rem; transition: color 0.3s; }
.proj-card:hover .proj-top i { color: var(--accent); }

.proj-lang {
    font-family: var(--ff-code); font-size: 0.68rem;
    padding: 2px 8px; border-radius: 10px;
    background: var(--surface); border: 1px solid var(--border);
}

.proj-card h3 { font-size: 0.88rem; font-weight: 700; color: var(--text1); }
.proj-card p { font-size: 0.78rem; color: var(--text2); line-height: 1.45; }

/* === QUOTE TILE === */
.tile-quote {
    text-align: center; padding: 16px;
    font-family: var(--ff-code); font-size: 0.82rem;
    color: var(--text3); font-style: italic;
    border-style: dashed;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .bento { grid-template-columns: 1fr; }
    .tile-hero, .tile-about, .tile-links,
    .tile-exp, .tile-projects, .tile-quote {
        grid-column: 1 / -1;
    }
    .tile-hero { flex-direction: column; text-align: center; padding: 24px; }
    .hero-tags { justify-content: center; }
    .link-grid { grid-template-columns: 1fr 1fr; }
    body { padding: 16px 10px 40px; }
}

@media (max-width: 420px) {
    .link-grid { grid-template-columns: 1fr; }
    .hero-name { font-size: 1.3rem; }
    .status-text { display: none; }
}