/* ==========================================================================
   RESEARCH IELTS - ULTRA-MINIMALIST BLANK CANVAS STYLESHEET
   Target Domain: research-ielts.pages.dev
   Zero text clutter, pure video board
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg-dark: #080A0F;
  --bg-surface: #12161F;
  --bg-card: #161B26;
  --border-color: rgba(255, 255, 255, 0.08);
  --accent: #00F0FF;
  
  --text-main: #F0F4F8;
  --text-sub: #8492A6;
  
  --font-main: 'Inter', -apple-system, sans-serif;
  --radius: 12px;
  --transition: all 0.2s ease;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-main);
  min-height: 100vh;
}

/* ==========================================================================
   MINIMAL HEADER & CATEGORIES
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 10, 15, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  max-width: 1360px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.3px;
}

.brand .logo {
  font-size: 22px;
}

.search-box {
  flex: 1;
  max-width: 400px;
}

.search-box input {
  width: 100%;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-main);
  font-size: 13px;
  outline: none;
  transition: var(--transition);
}

.search-box input:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.08);
}

.btn-add {
  padding: 8px 18px;
  background: var(--accent);
  border: none;
  border-radius: 20px;
  color: #000;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.btn-add:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(0, 240, 255, 0.3);
}

/* Category Bar */
.category-bar {
  max-width: 1360px;
  margin: 0 auto;
  padding: 8px 24px 12px;
  overflow-x: auto;
}

.category-pills {
  display: flex;
  align-items: center;
  gap: 8px;
  width: max-content;
}

.pill {
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  color: var(--text-sub);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.pill:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}

.pill.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  font-weight: 700;
}

/* ==========================================================================
   BLANK CANVAS MAIN AREA & VIDEO GRID
   ========================================================================== */
.canvas-container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 24px;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 14px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.video-card:hover {
  border-color: rgba(0, 240, 255, 0.3);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.card-iframe-wrap {
  width: 100%;
  height: 280px;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 10px;
  border: 1px solid var(--border-color);
}

.card-iframe-wrap iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.card-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.card-cat {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.35;
}

.card-action-note {
  font-size: 12px;
  color: var(--text-sub);
  margin-top: 4px;
  line-height: 1.4;
  background: rgba(255, 255, 255, 0.03);
  padding: 6px 10px;
  border-radius: 6px;
  border-left: 2px solid var(--accent);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 11.5px;
  color: var(--text-sub);
}

.card-link {
  color: var(--text-sub);
  text-decoration: none;
  font-weight: 500;
}

.card-link:hover { color: var(--accent); }

/* ==========================================================================
   MINIMAL MODAL
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 6, 10, 0.85);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  width: 90%;
  max-width: 460px;
  padding: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 700;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-sub);
  font-size: 22px;
  cursor: pointer;
}

.close-btn:hover { color: #FFF; }

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.field label {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-sub);
}

.field input, .field select {
  padding: 9px 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  font-size: 13px;
  outline: none;
  font-family: var(--font-main);
}

.field input:focus, .field select:focus {
  border-color: var(--accent);
}

.field select option {
  background: var(--bg-surface);
  color: #FFF;
}

.modal-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 8px;
}

.btn-cancel {
  padding: 8px 14px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  color: var(--text-sub);
  font-size: 12px;
  cursor: pointer;
}

.btn-save {
  padding: 8px 16px;
  background: var(--accent);
  border: none;
  border-radius: 16px;
  color: #000;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--accent);
  color: #FFF;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 12.5px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 300;
}

.toast.show {
  opacity: 1;
}

@media (max-width: 640px) {
  .header-inner { flex-direction: column; align-items: stretch; }
}