/* ==========================================
   BASE — variables, reset, typography, buttons, utilities
   Dr. Gian Antariksa — Black Minimalism theme
   ========================================== */

:root {
    /* The theme is intentionally pure-black; one value, semantic names. */
    --black: #000000;
    --ink-900: var(--black);
    --panel: var(--black);
    --panel-alt: var(--black);

    --panel-highlight: rgba(255, 255, 255, 0.03);
    --border-soft: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);

    --text-strong: #f9f6ef;
    --text-body: #c2c2c2;
    --text-muted: #8a8a8a;

    --accent-primary: #c29bff;
    --accent-secondary: #7de2ff;
    --accent-tertiary: #ff8a65;
    --success: #84ffa2;

    --shadow-soft: 0 12px 40px rgba(0, 0, 0, 0.45);
    --shadow-medium: 0 25px 60px rgba(0, 0, 0, 0.55);
    --max-width: 1180px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--ink-900);
    color: var(--text-body);
    line-height: 1.7;
    min-height: 100vh;
    position: relative;
}

img {
    max-width: 100%;
    display: block;
}

[hidden] {
    display: none !important;
}

.container {
    width: min(100%, var(--max-width));
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 1;
}

section {
    padding: 6rem 0;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-strong);
    font-weight: 600;
    line-height: 1.2;
}

p {
    color: var(--text-body);
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.85rem 1.5rem;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    transition: all 0.3s ease;
    letter-spacing: 0.01em;
}

.btn svg {
    pointer-events: none;
}

.btn-primary {
    background: linear-gradient(110deg, var(--accent-primary), var(--accent-secondary));
    color: #030303;
    box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    border-color: var(--border-strong);
    color: var(--text-strong);
    background: transparent;
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* UTILITIES — scroll reveal (set by ui.js) */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.revealed {
    opacity: 1;
    transform: none;
}

/* Toast shown when an email is copied */
.copy-toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(132, 255, 162, 0.92);
    color: #041007;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    z-index: 10000;
    animation: fadeInOut 2s ease;
}

/* KEYFRAMES */
@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.6; }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0; }
    10%, 90% { opacity: 1; }
}