/* --- VARIABLES --- */
:root {
    --bg-primary: #091a2e;
    --bg-secondary: #0e263f;
    --text-primary: #daf5f1;
    --text-secondary: #7dcec5;
    --accent-primary: #00e5c0;
    --accent-comp: #b44ef5;
    --card-border: rgba(0,229,192,0.18);
    --card-bg: #091a2e;
}

[data-theme="dark"] {
    --bg-primary: #091a2e;
    --bg-secondary: #0e263f;
    --text-primary: #daf5f1;
    --text-secondary: #7dcec5;
    --accent-primary: #00e5c0;
    --accent-comp: #b44ef5;
    --card-border: rgba(0,229,192,0.18);
    --card-bg: #091a2e;
}

[data-theme="light"] {
    --bg-primary: #e8faf6;
    --bg-secondary: #c4f2e9;
    --text-primary: #0a2520;
    --text-secondary: #1e7a6e;
    --accent-primary: #008f78;
    --accent-comp: #8b2fd4;
    --card-border: rgba(0,143,120,0.22);
    --card-bg: #ffffff;
    --accent-glow: rgba(0,143,120,0.18);
    --nav-bg: rgba(232,250,246,0.97);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* ── Global teal scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: var(--accent-primary); border-radius: 4px; }
::-webkit-scrollbar-track { background: transparent; }
* { scrollbar-width: thin; scrollbar-color: var(--accent-primary) transparent; }

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

/* --- NAVIGATION --- */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-primary);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom: 1px solid rgba(0,229,192,0.3);
    padding: 1rem 0;
}