/* /assets/css/branding.css */

/* --- 1. CORE VARIABLES --- */
:root {
  --brand: #51007F;
  --focus: 0 0 0 3px rgba(81,0,127,0.35);
  --radius: 14px;
  --gap: 24px;
  --container: 1100px;
}

/* Default when JS is off / data-theme not set: follow system */
:root:not([data-theme]) {
  color-scheme: light;
  --bg: #f6f7fb;
  --text: #1b1c20;
  --muted: #5c5f66;
  --card: rgba(255,255,255,0.72);
  --stroke: rgba(10,12,16,0.08);
  --badge-bg: rgba(81,0,127,0.1);
  --badge-text: #51007F;
  --brand-accent: #6a00ab;
  --brand-accent-bg: rgba(81,0,127,0.12);
  --brand-accent-text: #51007F;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --bg: #0b0b10;
    --text: #e9e9ee;
    --muted: #b9bbbf;
    --card: rgba(255,255,255,0.08);
    --stroke: rgba(255,255,255,0.16);
    --badge-bg: rgba(81,0,127,0.3);
    --badge-text: #d8b4fe;
    --brand-accent: #d8b4fe;
    --brand-accent-bg: rgba(216,180,254,0.28);
    --brand-accent-text: #f5e9ff;
  }
}

/* Explicit user choice */
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f7fb;
  --text: #1b1c20;
  --muted: #5c5f66;
  --card: rgba(255,255,255,0.72);
  --stroke: rgba(10,12,16,0.08);
  --badge-bg: rgba(81,0,127,0.1);
  --badge-text: #51007F;
  --brand-accent: #6a00ab;
  --brand-accent-bg: rgba(81,0,127,0.12);
  --brand-accent-text: #51007F;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b0b10;
  --text: #e9e9ee;
  --muted: #b9bbbf;
  --card: rgba(255,255,255,0.08);
  --stroke: rgba(255,255,255,0.16);
  --badge-bg: rgba(81,0,127,0.3);
  --badge-text: #d8b4fe;
  --brand-accent: #d8b4fe;
  --brand-accent-bg: rgba(216,180,254,0.28);
  --brand-accent-text: #f5e9ff;
}

/* --- 2. GLOBAL RESET --- */
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; padding: 0; }

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

/* Background Glow */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1000px 700px at 10% 0%, rgba(81,0,127,0.35), transparent 60%),
    radial-gradient(800px 600px at 85% 10%, rgba(81,0,127,0.28), transparent 60%),
    radial-gradient(900px 700px at 50% 100%, rgba(81,0,127,0.22), transparent 62%);
  pointer-events: none;
  z-index: -1;
}

h1, h2, h3, h4 { margin: 0 0 1rem 0; font-weight: 800; line-height: 1.2; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(2rem, 4vw, 2.5rem); text-align: center; margin-bottom: 2rem; }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1.5rem 0; color: var(--muted); }
a { color: inherit; text-decoration: none; transition: 0.2s; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; padding: 0; margin: 0; }

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- 3. COMPONENTS --- */
.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  font-weight: 700;
  border-radius: 99px;
  padding: 12px 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #fff;
  background: linear-gradient(135deg, #6a00ab, var(--brand));
  box-shadow: 0 10px 20px rgba(81,0,127,0.35);
  transition: transform .1s ease, filter .2s ease;
  font-size: 1rem;
  text-decoration: none;
}
.btn:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn.secondary { background: var(--card); border: 1px solid var(--stroke); color: var(--text); box-shadow: none; }

.surface {
  border: 1px solid var(--stroke);
  background: var(--card);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
  backdrop-filter: blur(10px);
  transition: background 0.3s ease, border-color 0.3s ease;
}

/* Input Styling (Used in Login/Forms) */
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block; margin-bottom: 8px; font-weight: 600; font-size: 0.9rem; color: var(--text);
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 12px; border-radius: 8px;
    border: 1px solid var(--stroke); background: rgba(0,0,0,0.1);
    color: var(--text); font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}
:root[data-theme="light"] .form-group input,
:root[data-theme="light"] .form-group select {
    background: #ffffff; border: 1px solid #d1d5db;
}
.form-group input:focus, .form-group select:focus {
    outline: none; border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(81,0,127,0.15);
}

/* --- 4. HEADER/FOOTER UTILS --- */
header.main-head {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}
.logo { font-weight: 800; font-size: 1.4rem; display: flex; align-items: center; gap: 10px; }
.logo img { width: 60px; height: auto; object-fit: contain; }

.theme-toggle {
  background: transparent; border: 1px solid var(--stroke);
  color: var(--text); padding: 8px; border-radius: 50%;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: 0.2s;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.theme-toggle:hover { background: var(--card); color: var(--brand); }
.theme-toggle svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-moon { display: none; }
.icon-sun { display: block; }

:root[data-theme="light"] .icon-sun { display: none; }
:root[data-theme="light"] .icon-moon { display: block; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .icon-sun { display: none; }
  :root:not([data-theme="dark"]) .icon-moon { display: block; }
}

footer { 
    margin-top: auto; 
    border-top: 1px solid var(--stroke); 
    padding: 30px 0; 
    background: rgba(0,0,0,0.03); 
    text-align: center;
    font-size: 0.85rem; 
    color: var(--muted);
}