/* ============================================
   DH TECH — Component Library
   Light Premium Technology Studio
   ============================================ */

/* ---- CONTAINER ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--section-padding-x);
}

.container--wide {
  max-width: var(--container-wide);
}

/* ---- SECTION ---- */
.section {
  padding-block: var(--section-padding-y);
  position: relative;
}

/* ---- SECTION HEADER ---- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border: 1px solid rgba(37, 99, 235, 0.16);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.section-eyebrow::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 6px var(--color-primary);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.section-title span,
.section-title .highlight {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 580px;
  margin-inline: auto;
  line-height: var(--leading-relaxed);
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--btn-padding-y) var(--btn-padding-x);
  border-radius: var(--btn-radius);
  font-family: var(--font-sans);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  line-height: 1;
  transition: all var(--btn-transition);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn svg {
  transition: transform 0.25s var(--primitive-ease-out);
}

.btn:hover svg {
  transform: translateX(4px);
}

.btn--primary {
  background: var(--gradient-brand);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28), 0 1px 3px rgba(37, 99, 235, 0.15);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.38), 0 2px 6px rgba(37, 99, 235, 0.2);
  filter: brightness(1.03);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.btn--ghost {
  background: #FFFFFF;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
}

.btn--ghost:hover {
  color: var(--color-primary);
  border-color: var(--primitive-slate-300);
  background: var(--primitive-slate-50);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn--ghost:active {
  transform: translateY(0);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn--outline:active {
  transform: translateY(0);
}

.btn--lg {
  padding: 0.95rem 2.25rem;
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn--sm {
  padding: 0.55rem 1.25rem;
  font-size: var(--text-xs);
}

/* ---- BADGE ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  border: 1px solid var(--color-border);
  background: #FFFFFF;
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-xs);
}

.badge--primary {
  background: rgba(37, 99, 235, 0.08);
  border-color: rgba(37, 99, 235, 0.2);
  color: var(--color-primary);
}

/* ---- CARD ---- */
.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);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--color-border-active);
  box-shadow: var(--card-shadow-hover), var(--shadow-glow);
  transform: translateY(-4px);
}

/* ---- ICON BOX ---- */
.icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-light);
  border: 1px solid rgba(37, 99, 235, 0.16);
  color: var(--color-primary);
  transition: transform var(--transition-normal), background var(--transition-normal), border-color var(--transition-normal);
  flex-shrink: 0;
}

.icon-box svg {
  width: 22px;
  height: 22px;
  transition: transform var(--transition-normal);
}

/* ---- DIVIDER ---- */
.divider {
  width: 100%;
  height: 1px;
  background: var(--color-border);
}

/* ---- GRID UTILS ---- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-2,
  .grid-3 { grid-template-columns: 1fr; }
}

/* ---- FLEX UTILS ---- */
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ---- GRADIENT TEXT & SHIMMER ---- */
.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-shimmer {
  background: linear-gradient(
    90deg,
    #1D4ED8 0%,
    #06B6D4 30%,
    #2563EB 60%,
    #1D4ED8 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textShimmer 6s linear infinite;
}

@keyframes textShimmer {
  to {
    background-position: 200% center;
  }
}

/* ---- GLOW DOT ---- */
.glow-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary);
  animation: pulse-dot 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

/* ---- GLASS EFFECT ---- */
.glass {
  background: var(--color-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
}

/* ---- ANIMATIONS & SCROLL REVEALS ---- */
.anim-fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--primitive-ease-out),
              transform 0.7s var(--primitive-ease-out);
  will-change: opacity, transform;
}

.anim-fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.anim-blur-up {
  opacity: 0;
  transform: translateY(24px);
  filter: blur(6px);
  transition: opacity 0.8s var(--primitive-ease-out),
              transform 0.8s var(--primitive-ease-out),
              filter 0.8s var(--primitive-ease-out);
  will-change: opacity, transform, filter;
}

.anim-blur-up.visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.anim-fade-in {
  opacity: 0;
  transition: opacity 0.7s var(--primitive-ease-out);
  will-change: opacity;
}

.anim-fade-in.visible {
  opacity: 1;
}

/* Stagger delays */
.anim-delay-1 { transition-delay: 0.1s; }
.anim-delay-2 { transition-delay: 0.2s; }
.anim-delay-3 { transition-delay: 0.3s; }
.anim-delay-4 { transition-delay: 0.4s; }
.anim-delay-5 { transition-delay: 0.5s; }
.anim-delay-6 { transition-delay: 0.6s; }

/* ---- FORM ELEMENTS (LIGHT PREMIUM) ---- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.form-label .required {
  color: var(--color-error);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: #FFFFFF;
  border: 1px solid var(--primitive-slate-300);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--primitive-slate-400);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--primitive-slate-400);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  background: #FFFFFF;
  box-shadow: 0 0 0 3.5px rgba(37, 99, 235, 0.14);
  outline: none;
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  font-weight: 500;
  display: none;
  margin-top: 2px;
}

.form-error.visible {
  display: block;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 42px;
  cursor: pointer;
}

.form-select option {
  background: #FFFFFF;
  color: var(--color-text-primary);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.6;
}

/* ---- LOADING SPINNER ---- */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255, 255, 255, 0.35);
  border-top-color: #FFFFFF;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

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

/* ---- TAG ---- */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  background: var(--primitive-slate-100);
  border: 1px solid var(--primitive-slate-200);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.tag:hover {
  background: var(--color-primary-light);
  border-color: rgba(37, 99, 235, 0.2);
  color: var(--color-primary);
}