/* =====================================================
   Buttons
   ===================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(99, 102, 241, 0.4);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-3px);
}

/* =====================================================
   Section Title Component
   ===================================================== */
.section-title {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 70px;
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
}

.section-title p {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.section-label {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 50px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

/* =====================================================
   Cards
   ===================================================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 30px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  backdrop-filter: blur(10px);
  height: 100%;
}

.card:hover {
  transform: translateY(-10px);
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 25px 50px var(--shadow);
}

.card-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 24px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.15));
  color: var(--primary);
  transition: transform var(--transition-base), background var(--transition-base);
}

.card:hover .card-icon {
  transform: scale(1.1) rotate(-5deg);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
}

.card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* =====================================================
   Forms
   ===================================================== */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

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

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 767px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-status {
  display: none;
  padding: 14px 18px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-weight: 500;
}

.form-status.show {
  display: block;
}

.form-status.success {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #22c55e;
}

.form-status.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

/* =====================================================
   Preloader
   ===================================================== */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg-default);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader-inner {
  text-align: center;
}

.preloader-logo {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  animation: pulse 2s ease-in-out infinite;
}

.preloader-bar {
  width: 160px;
  height: 4px;
  background: var(--bg-surface);
  border-radius: 4px;
  overflow: hidden;
}

.preloader-bar::after {
  content: '';
  display: block;
  width: 40%;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  border-radius: 4px;
  animation: load 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

@keyframes load {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(250%); }
}

/* =====================================================
   Back to Top
   ===================================================== */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
  z-index: 997;
  border: none;
}

.back-to-top.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  color: #fff;
}

/* =====================================================
   Theme Toggle
   ===================================================== */
.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--primary);
  color: #fff;
  transform: rotate(20deg);
}

.theme-toggle .icon-light,
[data-theme="light"] .theme-toggle .icon-dark {
  display: none;
}

[data-theme="light"] .theme-toggle .icon-light {
  display: block;
}

.theme-toggle .icon-dark {
  display: block;
}