/**
 * 06-components.css — Primitive Components
 * YDC Child Enterprise Theme
 *
 * Rules:
 *   - Every component consumes tokens only. Zero hardcoded values.
 *   - No component knows about page-specific layout or context.
 *   - No glow on any component. Depth via shadow + surface + border only.
 *   - Buttons stand out via contrast, shape, spacing — not glow.
 */

/* ═══════════════════════════════════════════════
   BUTTON
═══════════════════════════════════════════════ */

/* Base button reset + Liquid Glass shared properties */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-weight: var(--font-weight-medium);
  font-size: var(--text-sm);
  line-height: 1;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none !important;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-flat-md);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

/* Liquid Sheen Sweep Effect on Hover */
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(59, 110, 246, 0.12) 50%,
    transparent 100%
  );
  transform: skewX(-25deg);
  transition: left 0.65s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  z-index: 2;
}

.btn:hover::before {
  left: 100%;
}

.btn:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-inset-sm) !important;
}

/* Button Variants */
.btn-primary {
  background: var(--surface-2) !important;
  color: var(--text-primary) !important;
  border-color: transparent !important;
}

.btn-primary:hover {
  border-color: transparent !important;
  box-shadow: var(--shadow-flat-lg) !important;
}

.btn-secondary {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-primary);
  border-color: transparent;
}

.btn-secondary:hover {
  border-color: transparent;
  color: var(--text-primary);
  box-shadow: var(--shadow-flat-lg);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: transparent;
  box-shadow: var(--shadow-flat-sm);
}

.btn-outline:hover {
  border-color: transparent;
  box-shadow: var(--shadow-flat-md);
}

.btn-primary:active,
.btn-secondary:active,
.btn-outline:active {
  transform: translateY(1px) !important;
  box-shadow: var(--shadow-inset-sm) !important;
}

.btn-large {
  font-size: var(--text-md);
  padding: 16px 36px;
  border-radius: var(--radius-sm);
}

/* Custom component buttons — same visual language as .btn-primary */
.ydc-polaroid-btn,
.ydc-btn-register {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-weight: var(--font-weight-medium);
  font-size: var(--text-sm);
  line-height: 1;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none !important;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  background: var(--surface-2) !important;
  color: var(--text-primary) !important;
  border: 1px solid transparent !important;
  box-shadow: var(--shadow-flat-md) !important;
  transition: transform 0.25s ease, box-shadow 0.25s ease !important;
}

.ydc-polaroid-btn::before,
.ydc-btn-register::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(59, 110, 246, 0.12) 50%,
    transparent 100%
  );
  transform: skewX(-25deg);
  transition: left 0.75s ease;
  pointer-events: none;
}

.ydc-polaroid-btn:hover::before,
.ydc-btn-register:hover::before {
  left: 100%;
}

.ydc-polaroid-btn:hover,
.ydc-btn-register:hover {
  border-color: transparent !important;
  box-shadow: var(--shadow-flat-lg) !important;
  color: var(--text-primary) !important;
  transform: translateY(-2px) !important;
}

.ydc-polaroid-btn:active,
.ydc-btn-register:active {
  transform: translateY(1px) !important;
  box-shadow: var(--shadow-inset-sm) !important;
}

/* ── Text-slide hover animation ──────────────── */
/*
  Usage:
    <a class="btn btn-primary">
      <div class="btn__label">
        <span class="btn__text">Label</span>
      </div>
    </a>
  On hover, text slides up and reveals duplicate below.
  The duplicate is created via text-shadow on the span.
*/
.btn__label {
  overflow: hidden;
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 1.4em;
  line-height: 1.4;
}

.btn__text {
  display: inline-block;
  transition: transform 0.5s cubic-bezier(0.625, 0.05, 0, 1);
  text-shadow: 0 2em currentColor;
}

.btn:hover .btn__text {
  transform: translateY(-2em);
}




/* ═══════════════════════════════════════════════
   SURFACE / CARD
═══════════════════════════════════════════════ */

.surface {
  background-color: var(--surface-2);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

/* Elevation variants */
.surface--1 { 
  background-color: var(--surface-1); 
  box-shadow: inset 0 8px 32px rgba(0, 0, 0, 0.02);
}
.surface--2 { background-color: var(--surface-2); }
.surface--3 { background-color: var(--surface-3); }

/* Interactive surface */
.surface--interactive {
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.surface--interactive:hover {
  box-shadow: var(--shadow-flat-md);
  transform: translateY(-3px);
}

.surface--interactive:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-inset-sm);
}


/* ═══════════════════════════════════════════════
   TAG / BADGE
═══════════════════════════════════════════════ */

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  background-color: var(--accent-soft);
  color: var(--accent-primary);
  border: 1px solid rgba(59, 130, 246, 0.15);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.tag--neutral {
  background-color: var(--surface-2);
  color: var(--text-secondary);
  border-color: var(--border-subtle);
}

.badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semi);
  padding: 2px var(--space-2);
  border-radius: var(--radius-xs);
  background-color: var(--accent-soft);
  color: var(--accent-primary);
}


/* ═══════════════════════════════════════════════
   INPUT
═══════════════════════════════════════════════ */

.input {
  width: 100%;
  background-color: var(--surface-2);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-inset-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-weight-light);
  padding: var(--space-3) var(--space-4);
  transition: border-color var(--transition-fast);
  outline: none;
}

.input::placeholder {
  color: var(--text-muted);
}

.input:focus {
  border-color: var(--accent-primary);
}


/* ═══════════════════════════════════════════════
   LOGO MARQUEE
═══════════════════════════════════════════════ */

.logo-marquee {
  display: flex;
  overflow: hidden;
  gap: var(--space-9);
  mask-image: linear-gradient(
    to right,
    transparent,
    black 10%,
    black 90%,
    transparent
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent,
    black 10%,
    black 90%,
    transparent
  );
}

.logo-marquee__track {
  display: flex;
  align-items: center;
  gap: var(--space-9);
  animation: marqueeScroll 28s linear infinite;
  flex-shrink: 0;
}

@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.logo-marquee__item img {
  height: 28px;
  width: auto;
  opacity: 0.45;
  filter: brightness(0) invert(1);
  transition: opacity var(--transition-fast);
}

.logo-marquee__item:hover img {
  opacity: 0.7;
}

/* ═══════════════════════════════════════════════
   FOCUS-VISIBLE (ACCESSIBILITY + NEUMORPHISM)
═══════════════════════════════════════════════ */

/* Nhóm Input (Lõm) */
.input:focus-visible, 
.ydc-glass-input:focus-visible {
  outline: none;
  box-shadow: var(--shadow-inset-sm), 0 0 0 3px var(--accent-soft) !important;
}

/* Nút cơ bản */
.btn:focus-visible,
.ydc-polaroid-btn:focus-visible,
.ydc-btn-register:focus-visible {
  outline: none;
  box-shadow: var(--shadow-flat-md), 0 0 0 3px var(--accent-soft) !important;
}

/* Nút outline có base shadow thấp hơn */
.btn-outline:focus-visible {
  outline: none;
  box-shadow: var(--shadow-flat-sm), 0 0 0 3px var(--accent-soft) !important;
}

/* Tùy chọn: Khi user vừa hover vừa focus (bằng phím) */
.btn:hover:focus-visible,
.ydc-polaroid-btn:hover:focus-visible,
.ydc-btn-register:hover:focus-visible {
  outline: none;
  box-shadow: var(--shadow-flat-lg), 0 0 0 3px var(--accent-soft) !important;
}

/* Khi user đang click (active) mà thẻ vẫn có trạng thái focus */
.btn:active:focus-visible,
.btn-primary:active:focus-visible,
.btn-secondary:active:focus-visible,
.btn-outline:active:focus-visible,
.ydc-polaroid-btn:active:focus-visible,
.ydc-btn-register:active:focus-visible {
  outline: none;
  box-shadow: var(--shadow-inset-sm), 0 0 0 3px var(--accent-soft) !important;
}