/* =============================================
   BALAN PLUS — Base & Reset Styles
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&family=DM+Sans:wght@300;400;500;600;700&family=DM+Mono:wght@400;500&display=swap');

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--tr-fast);
}

a:hover { color: var(--primary-dark); }

button {
  cursor: pointer;
  font-family: var(--font-body);
  border: none;
  background: none;
}

input, textarea, select {
  font-family: var(--font-body);
  font-size: 1rem;
}

ul, ol { list-style: none; }

/* Container */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-6);
}

@media (max-width: 768px) {
  .container { padding: 0 var(--sp-4); }
}

/* Section spacing */
.section { padding: var(--sp-20) 0; }
.section-sm { padding: var(--sp-12) 0; }
.section-lg { padding: calc(var(--sp-20) * 1.5) 0; }

/* Typography */
.display-1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.display-2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 600;
  line-height: 1.2;
}

.heading-1 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.3;
}

.heading-2 {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 600;
  line-height: 1.35;
}

.text-lg { font-size: 1.125rem; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.text-center { text-align: center; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 12px 24px;
  border-radius: var(--r-full);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--tr);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(10,110,189,0.35);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(245,166,35,0.35);
}

.btn-outline {
  border-color: var(--border-strong);
  color: var(--text);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}

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

.btn-sm { padding: 8px 16px; font-size: 0.8rem; }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn-icon { width: 40px; height: 40px; padding: 0; border-radius: var(--r-full); justify-content: center; }

/* Card Base */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all var(--tr);
  box-shadow: var(--shadow-sm);
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--r-full);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.badge-primary { background: rgba(10,110,189,0.12); color: var(--primary); }
.badge-accent { background: rgba(245,166,35,0.12); color: var(--accent-dark); }
.badge-success { background: rgba(34,197,94,0.12); color: var(--success); }
.badge-danger { background: rgba(239,68,68,0.12); color: var(--danger); }
.badge-muted { background: var(--bg-secondary); color: var(--text-secondary); }

/* Form Controls */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color var(--tr-fast), box-shadow var(--tr-fast);
  outline: none;
}
.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10,110,189,0.12);
}
.form-control::placeholder { color: var(--text-muted); }

/* Star Rating */
.stars {
  display: inline-flex;
  gap: 2px;
  color: var(--accent);
  font-size: 0.85rem;
}

/* Divider */
.divider {
  height: 1px;
  background: var(--border);
  margin: var(--sp-6) 0;
}

/* Grid helpers */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-6); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Flex helpers */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-gap-2 { gap: var(--sp-2); }
.flex-gap-4 { gap: var(--sp-4); }

/* Utilities */
.hidden { display: none !important; }
.mt-4 { margin-top: var(--sp-4); }
.mt-6 { margin-top: var(--sp-6); }
.mt-8 { margin-top: var(--sp-8); }
.mb-4 { margin-bottom: var(--sp-4); }
.mb-6 { margin-bottom: var(--sp-6); }
.mb-8 { margin-bottom: var(--sp-8); }

/* Scroll animations */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--border) 50%, var(--bg-secondary) 75%);
  background-size: 200% 100%;
  animation: skeleton-wave 1.5s infinite;
  border-radius: var(--r);
}
@keyframes skeleton-wave {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Toast notifications */
.toast-container {
  position: fixed;
  bottom: var(--sp-6);
  right: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  z-index: var(--z-toast);
}
.toast {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  font-weight: 500;
  animation: toast-in 0.35s var(--tr-slow);
  max-width: 360px;
}
.toast-success { border-left: 3px solid var(--success); }
.toast-error { border-left: 3px solid var(--danger); }
.toast-info { border-left: 3px solid var(--info); }
@keyframes toast-in {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--tr);
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(16px);
  transition: transform var(--tr-slow);
  box-shadow: var(--shadow-xl);
}
.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-6);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-secondary);
  border-radius: var(--r-full);
  padding: 4px;
}
.tab-btn {
  flex: 1;
  padding: 8px 16px;
  border-radius: var(--r-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--tr);
  text-align: center;
  cursor: pointer;
  border: none;
  background: none;
  font-family: var(--font-body);
}
.tab-btn.active {
  background: var(--bg-card);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}

/* Section headers */
.section-header {
  margin-bottom: var(--sp-10);
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--sp-3);
}
.section-label::before {
  content: '';
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

/* ── Global Form Validation Styles ── */
.form-control.is-error {
  border-color: var(--danger) !important;
  box-shadow: 0 0 0 3px rgba(220,38,38,.1) !important;
}
.field-error {
  display: none;
  font-size: .78rem;
  color: var(--danger);
  margin-top: 4px;
  font-weight: 500;
  align-items: center;
  gap: 4px;
}
.field-error.visible { display: flex; }
.field-error::before { content: '⚠ '; font-size: .8rem; }