/* ============================================================
   components.css — VidForge AI
   Scope: All reusable UI components. Zero layout/structural rules.
   Rule: Zero raw hex. Zero !important. Consume tokens only.
   Load order: tokens.css → base.css → layout.css → components.css
   ============================================================ */


/* ════════════════════════════════════════════════════════════
   1. SECTION UTILITY
   ════════════════════════════════════════════════════════════ */

/* Standard vertical-padded page section */
.section {
  padding-block: var(--section-py);
}


/* ════════════════════════════════════════════════════════════
   2. BUTTON SYSTEM  (GFD §7 + §11)
   ════════════════════════════════════════════════════════════ */

/* ── Base ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--primitive-space-2);
  height: var(--btn-height-md);           /* 44px */
  padding-inline: var(--btn-px-md);       /* 24px */
  border-radius: var(--btn-radius);
  font-family: var(--primitive-font-body);
  font-size: var(--text-body-md);
  font-weight: var(--btn-font-weight);    /* 600 */
  letter-spacing: var(--btn-letter-spacing); /* 0.06em */
  line-height: 1;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  transition: var(--transition-base);
  -webkit-user-select: none;
  user-select: none;
}

/* ── Primary — Burnt Orange CTA ──────────────────────────── */
.btn--primary {
  background: var(--accent-primary);
  color: var(--text-inverse);
  border-color: var(--accent-primary);
}

.btn--primary:hover {
  background: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
  box-shadow: var(--shadow-accent);
  transform: translateY(-1px);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: none;
}

/* ── Secondary — Ghost/Outline ───────────────────────────── */
.btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-default);
}

.btn--secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

.btn--secondary:active {
  background: var(--bg-active);
}

/* ── Ghost — Minimal text button ─────────────────────────── */
.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn--ghost:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

/* ── Danger — Destructive action ─────────────────────────── */
.btn--danger {
  background: var(--color-error);
  color: var(--primitive-white-pure);
  border-color: var(--color-error);
}

.btn--danger:hover {
  background: var(--color-error);
  filter: brightness(1.12);
  box-shadow: 0 4px 16px var(--color-error-bg);
  transform: translateY(-1px);
}

.btn--danger:active {
  transform: translateY(0);
  filter: none;
}

/* ── Icon button — square, no label ─────────────────────── */
.btn--icon {
  width: var(--btn-height-md);
  height: var(--btn-height-md);
  padding: 0;
  border-radius: var(--primitive-radius-md);
  flex-shrink: 0;
}

.btn--icon.btn--sm {
  width: var(--btn-height-sm);
  height: var(--btn-height-sm);
}

.btn--icon.btn--lg {
  width: var(--btn-height-lg);
  height: var(--btn-height-lg);
}

/* ── Size modifiers ───────────────────────────────────────── */
.btn--sm {
  height: var(--btn-height-sm);           /* 36px */
  padding-inline: var(--btn-px-sm);       /* 16px */
  font-size: var(--text-body-sm);
}

.btn--lg {
  height: var(--btn-height-lg);           /* 52px */
  padding-inline: var(--btn-px-lg);       /* 32px */
  font-size: var(--text-body-lg);
}

.btn--full-width {
  width: 100%;
}

/* ── Loading state ────────────────────────────────────────── */
.btn--loading {
  opacity: 0.72;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--loading::after {
  content: '';
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: var(--primitive-radius-pill);
  animation: btn-spin 0.6s linear infinite;
  margin-left: var(--primitive-space-2);
  flex-shrink: 0;
}

@keyframes btn-spin {
  to { transform: rotate(360deg); }
}

/* ── Disabled state ───────────────────────────────────────── */
.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.38;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
  transform: none;
}

/* ── Focus ring — inherits global :focus-visible ─────────── */
.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}


/* ════════════════════════════════════════════════════════════
   3. CARD COMPONENT
   ════════════════════════════════════════════════════════════ */

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
  transition: var(--transition-base);
}

/* Orange top-edge accent on featured/highlighted cards */
.card--featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-primary);
}

.card:hover {
  box-shadow: var(--shadow-2);
  border-color: var(--border-default);
}

/* Interactive card — adds pointer + lift on hover */
.card--interactive {
  cursor: pointer;
}

.card--interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-3);
}

.card--interactive:active {
  transform: translateY(0);
  box-shadow: var(--shadow-1);
}

/* Glass card — surface with backdrop blur for overlaid contexts */
.card--glass {
  background: rgba(26, 26, 26, 0.72);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-color: var(--border-subtle);
}


/* ════════════════════════════════════════════════════════════
   4. BADGE COMPONENT
   ════════════════════════════════════════════════════════════ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--primitive-space-1);
  padding: var(--badge-py) var(--badge-px);
  border-radius: var(--badge-radius);
  font-size: var(--badge-fs);
  font-weight: var(--badge-fw);
  letter-spacing: var(--badge-tracking);
  text-transform: uppercase;
  line-height: 1;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge--success { background: var(--color-success-bg); color: var(--color-success); }
.badge--warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge--error   { background: var(--color-error-bg);   color: var(--color-error);   }
.badge--info    { background: var(--color-info-bg);    color: var(--color-info);    }
.badge--accent  { background: var(--accent-primary-muted); color: var(--accent-primary); }
.badge--neutral { background: var(--bg-hover);         color: var(--text-secondary); }


/* ════════════════════════════════════════════════════════════
   5. FORM & INPUT SYSTEM  (GFD §12)
   ════════════════════════════════════════════════════════════ */

/* ── Form group — label + field + hint stack ─────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--primitive-space-2);
}

/* ── Label ────────────────────────────────────────────────── */
.form-label {
  font-size: var(--text-body-sm);
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0;
  line-height: 1.4;
}

/* ── Shared field base ────────────────────────────────────── */
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  height: var(--input-height);            /* 48px */
  padding-inline: var(--input-px);        /* 16px */
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--input-radius);
  color: var(--text-primary);
  font-family: var(--primitive-font-body);
  font-size: var(--text-body-lg);
  font-weight: 400;
  line-height: 1.5;
  transition: var(--transition-fast);
  /* Remove browser default outlines — we own focus states */
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

/* Textarea overrides */
.form-textarea {
  height: auto;
  min-height: 120px;
  padding-block: var(--primitive-space-3);
  resize: vertical;
  line-height: 1.65;
}

/* Placeholder */
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-tertiary);
}

/* Hover — brighten border slightly */
.form-input:hover,
.form-textarea:hover,
.form-select:hover {
  border-color: var(--border-strong);
}

/* Focus — accent border + focus ring */
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--accent-primary);
  box-shadow: var(--input-focus-ring);
  background: var(--bg-overlay);
}

/* Validation — error state */
.form-input.is-error,
.form-textarea.is-error,
.form-select.is-error {
  border-color: var(--color-error);
}

.form-input.is-error:focus,
.form-textarea.is-error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px var(--color-error-bg);
}

/* Validation — success state */
.form-input.is-valid,
.form-textarea.is-valid {
  border-color: var(--color-success);
}

/* Disabled field */
.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  background: var(--bg-surface);
}

/* ── Hint and error message lines ────────────────────────── */
.form-hint {
  font-size: var(--text-body-sm);
  color: var(--text-tertiary);
  line-height: 1.5;
}

.form-error-msg {
  font-size: var(--text-body-sm);
  color: var(--color-error);
  line-height: 1.5;
}

.form-success-msg {
  font-size: var(--text-body-sm);
  color: var(--color-success);
  line-height: 1.5;
}

/* ── Magic Box — large AI prompt textarea ─────────────────── */
.input-magic-box {
  min-height: 160px;
  font-size: var(--text-body-xl);
  background: var(--bg-overlay);
  border: 1px solid var(--border-default);
  border-radius: var(--primitive-radius-xl);
  padding: var(--primitive-space-6);
  line-height: 1.65;
  resize: vertical;
}

.input-magic-box:focus {
  border-color: var(--accent-primary);
  box-shadow:
    0 0 0 3px var(--accent-primary-muted),
    var(--shadow-accent);
  background: var(--bg-overlay);
}

.input-magic-box::placeholder {
  color: var(--text-tertiary);
  font-size: var(--text-body-lg);
}


/* ════════════════════════════════════════════════════════════
   6. TOAST NOTIFICATION SYSTEM  (GFD §23)
   JS: assets/js/components.js → Toast.show()
   ════════════════════════════════════════════════════════════ */

.toast-container {
  position: fixed;
  bottom: var(--primitive-space-6);
  right: var(--primitive-space-6);
  display: flex;
  flex-direction: column;
  gap: var(--primitive-space-3);
  z-index: 2000;
  max-width: 360px;
  width: calc(100vw - var(--primitive-space-12));
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--primitive-space-3);
  padding: var(--primitive-space-4) var(--primitive-space-5);
  background: var(--bg-overlay);
  border: 1px solid var(--border-default);
  border-radius: var(--primitive-radius-lg);
  box-shadow: var(--shadow-4);
  font-size: var(--text-body-md);
  color: var(--text-primary);
  line-height: 1.5;
  pointer-events: all;
  animation: toast-in var(--primitive-duration-base) var(--primitive-ease-spring) forwards;
}

/* Left-edge colour stripe per type */
.toast--success { border-left: 3px solid var(--color-success); }
.toast--error   { border-left: 3px solid var(--color-error);   }
.toast--warning { border-left: 3px solid var(--color-warning); }
.toast--info    { border-left: 3px solid var(--color-info);    }

/* Exit animation class added by JS before removal */
.toast--exit {
  animation: toast-out var(--primitive-duration-base) var(--primitive-ease-standard) forwards;
}

@keyframes toast-in {
  from {
    transform: translateX(110%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes toast-out {
  from {
    transform: translateX(0);
    opacity: 1;
    max-height: 80px;
  }
  to {
    transform: translateX(110%);
    opacity: 0;
    max-height: 0;
  }
}

@media (max-width: 480px) {
  .toast-container {
    bottom: var(--primitive-space-4);
    right: var(--primitive-space-4);
    left: var(--primitive-space-4);
    width: auto;
    max-width: 100%;
  }
}


/* ════════════════════════════════════════════════════════════
   7. SKELETON LOADER  (GFD §23)
   ════════════════════════════════════════════════════════════ */

@keyframes skeleton-shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position:  400px 0; }
}

.skeleton {
  border-radius: var(--primitive-radius-md);
  background: linear-gradient(
    90deg,
    var(--bg-elevated)  25%,
    var(--bg-hover)     50%,
    var(--bg-elevated)  75%
  );
  background-size: 800px 100%;
  animation: skeleton-shimmer 1.4s ease-in-out infinite;
}

.skeleton--text   { height: 16px; width: 100%; }
.skeleton--title  { height: 28px; width: 60%;  }
.skeleton--card   { height: 200px; width: 100%; border-radius: var(--card-radius); }
.skeleton--avatar { width: 40px; height: 40px; border-radius: var(--primitive-radius-pill); flex-shrink: 0; }
.skeleton--btn    { height: var(--btn-height-md); width: 120px; border-radius: var(--btn-radius); }


/* ════════════════════════════════════════════════════════════
   8. MODAL  (GFD §16)
   JS: components.js → Modal.open() / Modal.close()
   ════════════════════════════════════════════════════════════ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--primitive-space-6);
  z-index: 1500;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--primitive-duration-base) var(--primitive-ease-standard);
}

.modal-overlay.modal--open {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background: var(--bg-overlay);
  border: 1px solid var(--border-default);
  border-radius: var(--primitive-radius-2xl);
  padding: var(--primitive-space-8);
  width: 100%;
  max-width: 480px;
  max-height: calc(100vh - var(--primitive-space-12));
  overflow-y: auto;
  box-shadow: var(--shadow-4);
  display: flex;
  flex-direction: column;
  gap: var(--primitive-space-5);
  transform: translateY(16px) scale(0.98);
  transition:
    transform var(--primitive-duration-base) var(--primitive-ease-spring),
    opacity  var(--primitive-duration-base) var(--primitive-ease-standard);
}

.modal-overlay.modal--open .modal-box {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--primitive-space-4);
}

.modal-footer {
  display: flex;
  gap: var(--primitive-space-3);
  justify-content: flex-end;
  padding-top: var(--primitive-space-4);
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
}


/* ════════════════════════════════════════════════════════════
   9. SCROLL ANIMATION UTILITY  (GFD §5)
   Triggered by IntersectionObserver in landing.js
   ════════════════════════════════════════════════════════════ */

.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity   0.5s var(--primitive-ease-out),
    transform 0.5s var(--primitive-ease-out);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}