@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=Syne+Mono&family=DM+Sans:wght@300;400;500&display=swap');

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

:root { --radius: 6px; --transition: 0.2s ease; }

[data-theme="dark"] {
  --bg: #0d0d0f; --surface: #161618; --surface2: #1e1e22;
  --border: #2a2a2e; --accent: #c9a84c; --accent2: #4c8ec9;
  --text: #e8e4dc; --text2: #a09a90; --muted: #5a5860;
  --success: #4caf7d; --error: #c94c4c;
  --topbar-bg: rgba(13,13,15,0.92);
  --input-bg: transparent; --input-focus: rgba(201,168,76,0.06);
  --changed-color: #4c8ec9;
  --pill-bg: rgba(201,168,76,0.1); --pill-border: rgba(201,168,76,0.25);
  --save-color: #001a0a; --thead-bg: #161618;
  --warn-bg: rgba(201,168,76,0.08); --warn-border: rgba(201,168,76,0.25);
}

[data-theme="light"] {
  --bg: #f2ede6; --surface: #ffffff; --surface2: #f7f3ee;
  --border: #ddd8d0; --accent: #9a6f1e; --accent2: #1e5f9a;
  --text: #1a1814; --text2: #5a5248; --muted: #9a948e;
  --success: #2d7a50; --error: #9a2d2d;
  --topbar-bg: rgba(242,237,230,0.92);
  --input-bg: transparent; --input-focus: rgba(154,111,30,0.06);
  --changed-color: #1e5f9a;
  --pill-bg: rgba(154,111,30,0.1); --pill-border: rgba(154,111,30,0.3);
  --save-color: #ffffff; --thead-bg: #f7f3ee;
  --warn-bg: rgba(154,111,30,0.08); --warn-border: rgba(154,111,30,0.3);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg); color: var(--text);
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--topbar-bg);
  backdrop-filter: blur(12px); z-index: 200;
  transition: background var(--transition), border-color var(--transition);
}

.brand {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: 14px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--accent); text-decoration: none;
}

.brand:hover { opacity: .85; }

.topbar-right { display: flex; align-items: center; gap: 20px; }

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

.topbar-links a {
  font-size: 13px; color: var(--muted); text-decoration: none;
  transition: color .15s; white-space: nowrap;
}
.topbar-links a:hover { color: var(--text); }
.topbar-links a.active { color: var(--accent); font-weight: 600; }
.topbar-links .sep { color: var(--border); font-size: 11px; }

.theme-toggle { display: flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.theme-icon { font-size: 15px; line-height: 1; transition: transform .3s; }
.toggle-track { width: 34px; height: 19px; background: var(--border); border-radius: 10px; position: relative; transition: background var(--transition); }
.toggle-track::after { content:''; position:absolute; top:2.5px; left:2.5px; width:14px; height:14px; background:var(--accent); border-radius:50%; transition:transform .2s; }
[data-theme="light"] .toggle-track::after { transform: translateX(15px); }

.btn {
  padding: 9px 20px; border: none; border-radius: var(--radius);
  font-family: 'Syne', sans-serif; font-size: 11px; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase; cursor: pointer;
  transition: opacity .15s, transform .1s; white-space: nowrap;
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--accent); color: #1a1200; }
[data-theme="light"] .btn-primary { color: #fff; }
.btn-primary:hover { opacity: .85; }
.btn-save { background: var(--success); color: var(--save-color); }
.btn-save:hover { opacity: .85; }

.banner-inner { padding: 10px 16px; border-radius: var(--radius); font-size: 13px; font-weight: 500; }
.banner-inner.success { background: rgba(76,175,125,.12); border: 1px solid rgba(76,175,125,.3); color: var(--success); }
.banner-inner.error { background: rgba(201,76,76,.12); border: 1px solid rgba(201,76,76,.3); color: var(--error); }

.course-code {
  font-family: 'Syne Mono', monospace; font-size: 11px;
  color: var(--accent2); white-space: nowrap;
}

.course-name { color: var(--text); font-size: 12.5px; }

.edit-input {
  background: var(--input-bg); border: none;
  border-bottom: 1px solid var(--border); color: var(--text);
  font-family: 'Syne Mono', monospace; font-size: 12.5px;
  text-align: center; width: 100%; padding: 3px 2px;
  outline: none; border-radius: 0;
  transition: border-color .15s, background .15s, color var(--transition);
}
.edit-input:focus {
  border-color: var(--accent); background: var(--input-focus);
  border-radius: 3px 3px 0 0;
}
.edit-input.changed { border-color: var(--changed-color); color: var(--changed-color); }

.grade-select {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 4px; color: var(--text);
  font-family: 'Syne Mono', monospace; font-size: 12.5px;
  padding: 3px 6px; outline: none; cursor: pointer;
  transition: border-color .15s, background var(--transition), color var(--transition);
}
.grade-select:focus { border-color: var(--accent); }
.grade-select.changed { border-color: var(--changed-color); color: var(--changed-color); }

.page { max-width: 820px; margin: 0 auto; padding: 40px 24px 80px; }

.page-title { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 22px; color: var(--text); margin-bottom: 6px; }
.page-sub { font-size: 13px; color: var(--muted); margin-bottom: 28px; line-height: 1.6; }

.pill {
  font-family: 'Syne Mono', monospace; font-size: 11px;
  padding: 2px 10px; background: var(--pill-bg);
  border: 1px solid var(--pill-border); border-radius: 20px; color: var(--accent);
}