@import './tokens.css';

/* Universal Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-space);
  color: var(--text-main);
  line-height: 1.5;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-surface-hover);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Header */
.app-header {
  height: 56px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  z-index: 100;
  flex-shrink: 0;

  & .header-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;

    & .brand-badge {
      background: linear-gradient(135deg, var(--accent), var(--accent-purple));
      color: #fff;
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 0.9rem;
      padding: 0.25rem 0.6rem;
      border-radius: var(--radius-sm);
      box-shadow: 0 0 15px rgba(129, 140, 248, 0.4);
    }

    & .brand-title {
      font-family: var(--font-heading);
      font-size: 1.15rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text-pure);

      & span {
        color: var(--primary);
        font-weight: 400;
      }
    }

    & .brand-version {
      font-size: 0.7rem;
      color: var(--text-muted);
      background: var(--glass-bg-subtle);
      border: 1px solid var(--glass-border);
      padding: 2px 6px;
      border-radius: var(--radius-xs);
    }
  }

  & .header-playback {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-dark);
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
  }

  & .header-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
  }
}

/* Button Classes */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  outline: none;

  &.btn-subtle {
    background: var(--glass-bg-subtle);
    border-color: var(--glass-border);
    color: var(--text-muted);

    &:hover {
      background: var(--bg-surface-elevated);
      color: var(--text-main);
      border-color: rgba(255, 255, 255, 0.15);
    }
    &.active {
      background: var(--glass-bg-active);
      border-color: var(--primary);
      color: var(--primary);
    }
  }

  &.btn-primary {
    background: var(--primary);
    color: #040813;
    font-weight: 700;

    &:hover {
      background: #7dd3fc;
      box-shadow: 0 0 20px var(--primary-glow);
      transform: translateY(-1px);
    }
  }

  &.btn-accent {
    background: linear-gradient(135deg, var(--accent), var(--accent-purple));
    color: #fff;

    &:hover {
      box-shadow: 0 0 20px rgba(129, 140, 248, 0.35);
      transform: translateY(-1px);
    }
  }

  &.btn-icon {
    padding: 0.45rem;
    width: 32px;
    height: 32px;
  }
}

/* Main Studio Layout */
.app-layout {
  display: flex;
  flex: 1;
  height: calc(100vh - 56px - 140px); /* Timeline is 140px */
  overflow: hidden;
  position: relative;
}

/* Left Inspector: Keyframe Properties & Curves */
.sidebar-left {
  width: 380px;
  background: var(--bg-dark);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 50;

  & .panel-nav {
    display: flex;
    border-bottom: 1px solid var(--glass-border);
    background: var(--bg-surface);

    & .panel-tab {
      flex: 1;
      padding: 0.75rem 0.5rem;
      text-align: center;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-muted);
      cursor: pointer;
      border-bottom: 2px solid transparent;
      transition: all var(--transition-fast);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.4rem;

      &:hover {
        color: var(--text-main);
      }

      &.active {
        color: var(--primary);
        border-bottom-color: var(--primary);
        background: var(--glass-bg-active);
      }
    }
  }

  & .panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }
}

/* Center Stage */
.stage-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at center, #0c1222 0%, var(--bg-space) 100%);
  position: relative;
  overflow: hidden;
}

/* Stage Toolbar */
.stage-toolbar {
  height: 44px;
  background: rgba(8, 12, 22, 0.6);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  z-index: 20;

  & .toolbar-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
}

/* Stage Viewport */
.stage-viewport {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background-size: 24px 24px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
}

/* Animated Stage Target Object */
.motion-target-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transform-origin: center center;
  user-select: none;
}

/* Preview Subjects */
.preview-card {
  width: 280px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;

  & .card-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-size: 1.25rem;
    box-shadow: 0 0 20px var(--primary-glow);
  }

  & .card-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-pure);
  }

  & .card-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
  }
}

.preview-button {
  padding: 0.85rem 2rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #040813;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.05rem;
  box-shadow: 0 10px 30px var(--primary-glow);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.preview-badge {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid var(--primary);
  color: var(--primary);
  font-family: var(--font-code);
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 0 25px var(--primary-glow);
}

.preview-orb {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #38bdf8 0%, #818cf8 50%, #4c1d95 100%);
  box-shadow: 0 0 50px rgba(56, 189, 248, 0.5);
}

.preview-text {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, #ffffff 0%, var(--primary) 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.03em;
  text-align: center;
}

/* Right Sidebar: Preset Library */
.sidebar-right {
  width: 320px;
  background: var(--bg-dark);
  border-left: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 50;

  & .preset-head {
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    gap: 0.6rem;

    & .preset-title {
      font-family: var(--font-heading);
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-pure);
      display: flex;
      align-items: center;
      gap: 0.5rem;

      & i { color: var(--primary); }
    }
  }

  & .preset-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  & .preset-card {
    background: var(--bg-surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 0.65rem 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: space-between;

    &:hover {
      border-color: var(--primary);
      background: var(--bg-surface-hover);
      transform: translateX(3px);
    }

    &.active {
      border-color: var(--primary);
      background: var(--glass-bg-active);
      color: var(--primary);
    }

    & .preset-name {
      font-size: 0.82rem;
      font-weight: 600;
    }

    & .preset-cat {
      font-size: 0.68rem;
      color: var(--text-muted);
      background: rgba(255, 255, 255, 0.05);
      padding: 1px 5px;
      border-radius: 4px;
    }
  }
}

/* Bottom Multi-Track Keyframe Timeline */
.timeline-bar {
  height: 140px;
  background: #090d18;
  border-top: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 60;

  & .timeline-header {
    height: 36px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;

    & .timeline-title {
      font-size: 0.78rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 0.5rem;
      & i { color: var(--primary); }
    }

    & .keyframe-steps-nav {
      display: flex;
      align-items: center;
      gap: 0.35rem;
    }
  }

  & .timeline-track-area {
    flex: 1;
    position: relative;
    padding: 0.75rem 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;

    /* Ruler Line */
    & .timeline-ruler {
      position: relative;
      height: 24px;
      width: 100%;
      background: rgba(255, 255, 255, 0.03);
      border-radius: 4px;
      border: 1px solid rgba(255, 255, 255, 0.06);

      & .ruler-ticks {
        position: absolute;
        inset: 0;
        display: flex;
        justify-content: space-between;
        padding: 0 8px;
        align-items: center;
        font-family: var(--font-code);
        font-size: 0.68rem;
        color: var(--text-dim);
      }
    }

    /* Keyframe Markers Container */
    & .keyframe-markers-container {
      position: absolute;
      left: 1.5rem;
      right: 1.5rem;
      top: 50%;
      transform: translateY(-50%);
      height: 28px;
      pointer-events: none;
    }

    & .keyframe-diamond {
      position: absolute;
      width: 16px;
      height: 16px;
      background: var(--primary);
      transform: translate(-50%, -50%) rotate(45deg);
      border-radius: 2px;
      cursor: pointer;
      pointer-events: auto;
      box-shadow: 0 0 10px var(--primary-glow);
      transition: transform var(--transition-fast), background-color var(--transition-fast);
      z-index: 5;

      &:hover {
        transform: translate(-50%, -50%) rotate(45deg) scale(1.3);
        background: #fff;
      }

      &.active {
        background: #fff;
        border: 2px solid var(--primary);
        box-shadow: 0 0 15px #fff;
        transform: translate(-50%, -50%) rotate(45deg) scale(1.2);
      }
    }

    /* Timeline Playhead Needle */
    & .timeline-playhead {
      position: absolute;
      top: 0;
      bottom: 0;
      width: 2px;
      background: #ff007b;
      box-shadow: 0 0 8px #ff007b;
      pointer-events: none;
      transform: translateX(-50%);
      z-index: 10;

      &::before {
        content: '';
        position: absolute;
        top: -6px;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 0;
        border-left: 5px solid transparent;
        border-right: 5px solid transparent;
        border-top: 6px solid #ff007b;
      }
    }
  }
}

/* Control Inputs */
.ctrl-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;

  & .ctrl-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    justify-content: space-between;
    align-items: center;

    & .val-display {
      font-family: var(--font-code);
      font-size: 0.72rem;
      color: var(--primary);
    }
  }
}

.slider-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 5px;
  border-radius: 3px;
  background: var(--bg-surface-elevated);
  outline: none;
  cursor: pointer;

  &::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 0 8px var(--primary-glow);
  }
}

.select-input, .text-input {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-family: var(--font-sans);
  outline: none;
}

/* Bezier Canvas Box */
.bezier-canvas-card {
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;

  & canvas#bezierCanvas {
    background: #060913;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    cursor: crosshair;
  }
}

/* Modal Backdrop & Dialog */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 300;
  display: none;
  align-items: center;
  justify-content: center;

  &.open {
    display: flex;
  }

  & .modal-box {
    width: 90%;
    max-width: 650px;
    background: var(--bg-surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;

    & .modal-head {
      padding: 1.25rem;
      border-bottom: 1px solid var(--glass-border);
      display: flex;
      align-items: center;
      justify-content: space-between;

      & .modal-title {
        font-family: var(--font-heading);
        font-size: 1.15rem;
        font-weight: 700;
        color: var(--text-pure);
      }
    }

    & .modal-body {
      padding: 1.25rem;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
  }
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 160px; /* Above timeline */
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;

  & .toast {
    background: var(--bg-surface);
    border: 1px solid var(--glass-border);
    color: var(--text-pure);
    padding: 0.75rem 1.2rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.85rem;
    font-weight: 600;
    animation: toastSlideIn 0.25s ease-out;

    &.toast-success i { color: var(--success); }
    &.toast-primary i { color: var(--primary); }
    &.toast-danger i { color: var(--danger); }
  }
}

@keyframes toastSlideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}