:root {
  --yellow: #FDAF17;
  --yellow-hover: #e69d0f;
  --yellow-light: #FFF8E7;
  --black: #000000;
  --dark: #1a1a1a;
  --white: #ffffff;
  --gray: #6b7280;
  --gray-light: #f3f4f6;
  --border: #e5e7eb;
  --danger: #dc2626;
  --success: #059669;
  --radius: 12px;
  --shadow: 0 4px 16px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, sans-serif;
  background: var(--gray-light);
  color: var(--dark);
  line-height: 1.5;
}

.hidden { display: none !important; }

/* Header */
header {
  background: var(--black);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 3px solid var(--yellow);
}
.brand {
  font-weight: 800;
  font-size: 18px;
  color: var(--white);
  padding: 14px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.5px;
}
.sun {
  color: var(--yellow);
  font-size: 22px;
}
.brand-center {
  text-align: center;
  margin-bottom: 8px;
}
.brand-center .sun.large {
  font-size: 48px;
  display: block;
  margin-bottom: 4px;
}
.brand-center h1 {
  margin: 0;
  font-size: 24px;
  letter-spacing: 2px;
}

nav { display: flex; gap: 4px; }
nav a {
  text-decoration: none;
  color: rgba(255,255,255,0.7);
  padding: 14px 12px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
}
nav a:hover, nav a.active {
  color: var(--yellow);
  background: rgba(255,255,255,0.08);
}

/* Layout */
main { max-width: 720px; margin: 32px auto; padding: 0 16px; }

/* Cards */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.card h1, .card h2, .card h3 { margin-top: 0; }
.subtitle { color: var(--gray); margin-top: -6px; margin-bottom: 20px; }

/* Login */
.login-card { max-width: 400px; margin: 10vh auto 0; text-align: center; }

/* Buttons */
button, .btn-primary {
  background: var(--yellow);
  color: var(--black);
  border: none;
  padding: 11px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background .15s, transform .05s;
}
button:hover, .btn-primary:hover { background: var(--yellow-hover); }
button:active, .btn-primary:active { transform: translateY(1px); }
button:disabled, .btn-primary:disabled {
  background: var(--border);
  color: var(--gray);
  cursor: not-allowed;
  transform: none;
}
button.danger {
  background: var(--danger);
  color: #fff;
}
button.danger:hover { background: #b91c1c; }
button.full { width: 100%; margin-top: 16px; }

/* Forms */
label { display: block; margin-bottom: 16px; font-weight: 500; font-size: 14px; text-align: left; }
input[type="email"], input[type="password"], input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  margin-top: 6px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
  transition: border-color .15s;
}
input:focus { outline: none; border-color: var(--yellow); box-shadow: 0 0 0 3px rgba(253,175,23,0.15); }

.inline-form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.inline-form input { margin: 0; width: auto; min-width: 180px; }
.checkbox-label { display: inline-flex; align-items: center; gap: 6px; font-weight: 400; font-size: 14px; }

/* Toggle */
.mode-toggle { margin-bottom: 16px; }
.toggle-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-weight: 500;
}
.toggle-label input { display: none; }
.toggle-slider {
  width: 44px;
  height: 24px;
  background: var(--border);
  border-radius: 12px;
  position: relative;
  transition: background .2s;
  flex-shrink: 0;
}
.toggle-slider::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 20px; height: 20px;
  background: var(--white);
  border-radius: 50%;
  transition: transform .2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}
.toggle-label input:checked + .toggle-slider { background: var(--yellow); }
.toggle-label input:checked + .toggle-slider::after { transform: translateX(20px); }
.toggle-text { font-size: 14px; }

/* Drop zones */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  position: relative;
  transition: border-color .2s, background .2s;
  cursor: pointer;
  margin-bottom: 8px;
}
.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--yellow);
  background: var(--yellow-light);
}
.drop-zone input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.drop-hint { color: var(--gray); pointer-events: none; }
.drop-hint svg { margin-bottom: 6px; color: var(--gray); }
.drop-hint p { margin: 2px 0; }
.drop-hint .small { font-size: 13px; }
.file-name {
  font-size: 13px;
  color: var(--gray);
  margin-bottom: 12px;
  min-height: 18px;
}

/* Tables */
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 8px; }
.data-table th, .data-table td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
.data-table th { color: var(--gray); font-weight: 600; }
.data-table tr:last-child td { border-bottom: none; }

/* Messages */
.error { color: var(--danger); font-size: 14px; margin: 8px 0 0; }
.success { color: var(--success); font-size: 14px; margin: 8px 0 0; }
.status { margin-top: 12px; font-size: 14px; }
.stats {
  margin-top: 12px;
  padding: 12px 16px;
  background: var(--yellow-light);
  border-left: 4px solid var(--yellow);
  border-radius: 6px;
  font-size: 14px;
}
.stats strong { color: var(--black); }