/**
 * Frontend — Material Design 3 style, animations, modern UI/UX
 */

:root {
  /* Color scheme */
  --primary-dark: #072741;
  --primary: #348adc;
  --primary-rgb: 52, 138, 220;
  --accent: #348adc;
  --accent-rgb: 52, 138, 220;
  --accent-teal: #65c9d4;
  --accent-teal-rgb: 101, 201, 212;
  --muted: #6c7a85;
  --border-light: #dadfe4;
  --bg-page: #fbfcfc;
  --nav-height: 64px;
  --sidebar-width: 280px;
  --card-radius: 16px;
  --card-shadow: 0 2px 8px rgba(7,39,65,.06);
  --card-shadow-hover: 0 12px 24px rgba(7,39,65,.12);
  --elevation-1: 0 1px 3px rgba(7,39,65,.06), 0 1px 2px rgba(7,39,65,.04);
  --elevation-2: 0 4px 6px -1px rgba(7,39,65,.08), 0 2px 4px -2px rgba(7,39,65,.04);
  --elevation-3: 0 10px 15px -3px rgba(7,39,65,.08), 0 4px 6px -4px rgba(7,39,65,.04);
  --elevation-4: 0 20px 25px -5px rgba(7,39,65,.1), 0 8px 10px -6px rgba(7,39,65,.06);
  --surface-radius: 16px;
  --surface-radius-sm: 12px;
  --bs-primary: #348adc;
  --bs-primary-rgb: 52, 138, 220;
}

body { background-color: var(--bg-page); }

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes pulse-soft {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}
.animate-fade-in {
  animation: fadeIn 0.5s ease-out forwards;
}
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }
.opacity-0 { opacity: 0; }

/* Cover / Hero — primary-dark + primary + teal gradient */
.cover-section,
.hero-section {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-dark) 0%, #0d3560 40%, #348adc 80%, #65c9d4 100%);
  background-size: 200% 200%;
  animation: gradientShift 10s ease infinite;
  color: #fff;
  padding: 4rem 2rem;
  min-height: 70vh;
  display: flex;
  align-items: center;
}
.cover-section { border-radius: 0; margin-bottom: 0; }
.hero-section { border-radius: var(--surface-radius); margin-bottom: 3rem; min-height: auto; }
[data-bs-theme="dark"] .cover-section,
[data-bs-theme="dark"] .hero-section {
  background: linear-gradient(135deg, #051a2d 0%, var(--primary-dark) 50%, #1a5a8e 100%);
}
.cover-section .hero-badge,
.hero-section .hero-badge {
  display: inline-block;
  background: rgba(255,255,255,.2);
  backdrop-filter: blur(8px);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 1rem;
  animation: fadeInUp 0.5s ease-out;
}
.cover-section h1,
.hero-section h1 {
  font-weight: 800;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 1rem;
  text-shadow: 0 2px 12px rgba(0,0,0,.2);
  animation: fadeInUp 0.6s ease-out 0.1s forwards;
  opacity: 0;
}
.cover-section .hero-lead,
.hero-section .hero-lead {
  font-size: 1.15rem;
  opacity: 0.95;
  max-width: 540px;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease-out 0.2s forwards;
  opacity: 0;
}
.cover-section .btn-material,
.hero-section .btn-material {
  border-radius: 12px;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  box-shadow: var(--elevation-2);
  transition: transform .2s, box-shadow .2s;
  animation: fadeInUp 0.6s ease-out 0.3s forwards;
  opacity: 0;
}
.cover-section .btn-material:hover,
.hero-section .btn-material:hover {
  transform: translateY(-2px);
  box-shadow: var(--elevation-3);
}
.cover-section .btn-light { background: #fbfcfc; color: var(--primary-dark); border: none; }
.cover-section .btn-light:hover { background: #fff; color: var(--primary-dark); }
.cover-section .btn-outline-light { border-color: rgba(255,255,255,.6); color: #fff; }
.cover-section .btn-outline-light:hover { background: rgba(255,255,255,.2); color: #fff; border-color: #fff; }

/* Page sections */
.page-section {
  padding: 4rem 0;
  scroll-margin-top: var(--nav-height);
}
.page-section:nth-child(even) { background: #fff; }
[data-bs-theme="dark"] .page-section:nth-child(even) { background: rgba(255,255,255,.03); }
.section-title {
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
  color: var(--primary-dark);
  margin-bottom: 0.5rem;
}
[data-bs-theme="dark"] .section-title { color: var(--bs-body-color); }
.section-subtitle {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
}

/* FAQ accordion */
.faq-item {
  border: 1px solid var(--border-light);
  border-radius: var(--surface-radius-sm);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: box-shadow .2s;
}
.faq-item:hover { box-shadow: var(--elevation-1); }
.faq-item .accordion-button {
  background: #fff;
  color: var(--primary-dark);
  font-weight: 600;
  border: none;
  box-shadow: none;
}
[data-bs-theme="dark"] .faq-item .accordion-button { background: var(--bs-body-bg); color: var(--bs-body-color); }
.faq-item .accordion-button:not(.collapsed) { background: rgba(var(--primary-rgb), 0.08); color: var(--primary); }
.faq-item .accordion-button:focus { box-shadow: none; border-color: transparent; }
.faq-item .accordion-body { color: var(--muted); }

/* Material-style feature cards */
.card-material {
  border: none;
  border-radius: var(--surface-radius);
  box-shadow: var(--elevation-1);
  transition: box-shadow .3s ease, transform .3s ease;
  overflow: hidden;
  opacity: 0;
}
.card-material.visible {
  animation: fadeInUp 0.5s ease-out forwards;
}
.card-material:hover {
  box-shadow: var(--elevation-3);
  transform: translateY(-4px);
}
.card-material .card-body {
  padding: 1.5rem;
}
.card-material .card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--surface-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.12) 0%, rgba(var(--accent-teal-rgb), 0.1) 100%);
  color: var(--primary);
}
[data-bs-theme="dark"] .card-material .card-icon {
  background: rgba(var(--accent-rgb), 0.2);
  color: var(--accent-teal);
}
.card-material .card-title {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}
.card-material .card-text {
  font-size: 0.9rem;
  color: var(--bs-secondary-color);
  margin-bottom: 0;
}
.fw-700 { font-weight: 700; }
.steps-list code { font-size: 0.9em; }

[data-bs-theme="dark"] {
  --card-shadow: 0 2px 8px rgba(0,0,0,.2);
  --card-shadow-hover: 0 12px 24px rgba(0,0,0,.3);
  --bg-page: #0a1628;
}
[data-bs-theme="dark"] body { background-color: var(--bg-page); }

/* Dark mode: cards (services, pricing, features) use dark surface and light text */
[data-bs-theme="dark"] .card.bg-white,
[data-bs-theme="dark"] .card-material {
  background-color: var(--bs-body-bg) !important;
  border-color: rgba(255,255,255,.1);
  color: var(--bs-body-color);
}
[data-bs-theme="dark"] .card-material .card-body,
[data-bs-theme="dark"] .card.bg-white .card-body {
  background-color: transparent !important;
  color: var(--bs-body-color);
}
[data-bs-theme="dark"] .card-material .card-title,
[data-bs-theme="dark"] .card-material .card-text,
[data-bs-theme="dark"] .card.bg-white .card-title,
[data-bs-theme="dark"] .card.bg-white .card-text {
  color: var(--bs-body-color) !important;
}
[data-bs-theme="dark"] .card.bg-white .text-muted {
  color: var(--bs-secondary-color) !important;
}
/* Pricing card plan names (Free, Pro) — override inline primary-dark in dark mode */
[data-bs-theme="dark"] #pricing .card-body .h4.fw-700 {
  color: var(--bs-body-color) !important;
}

.navbar-material {
  min-height: var(--nav-height);
  box-shadow: 0 2px 8px rgba(7,39,65,.15);
  padding-top: 0;
  padding-bottom: 0;
  background: var(--primary-dark) !important;
}
.navbar-material .navbar-brand {
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.navbar-material .nav-link {
  font-weight: 500;
  padding: 0.5rem 0.75rem !important;
  border-radius: 8px;
  transition: background-color .15s;
}
.navbar-material .nav-link:hover {
  background-color: rgba(255,255,255,.1);
}
.navbar-material .navbar-toggler {
  border: none;
  padding: 0.5rem;
  border-radius: 50%;
}
.navbar-material .navbar-toggler:hover {
  background-color: rgba(255,255,255,.1);
}
.navbar-material .navbar-toggler:focus {
  box-shadow: 0 0 0 2px rgba(255,255,255,.3);
}

@media (min-width: 992px) {
  .navbar-material .navbar-toggler {
    display: none;
  }
}

@media (max-width: 991.98px) {
  .navbar-material .navbar-collapse {
    display: none !important;
  }
}

.offcanvas-sidebar {
  width: var(--sidebar-width) !important;
  max-width: 85vw;
  border-right: 0;
  box-shadow: 4px 0 24px rgba(0,0,0,.12);
}
.offcanvas-sidebar .offcanvas-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--bs-border-color);
}
.offcanvas-sidebar .offcanvas-title {
  font-weight: 600;
  font-size: 1.1rem;
}
.offcanvas-sidebar .nav {
  flex-direction: column;
}
.offcanvas-sidebar .nav-link {
  padding: 0.75rem 1.25rem !important;
  border-radius: 0;
  border-left: 3px solid transparent;
}
.offcanvas-sidebar .nav-link:hover,
.offcanvas-sidebar .nav-link.active {
  background-color: rgba(var(--accent-rgb), 0.08);
  border-left-color: var(--accent);
}
.offcanvas-sidebar .sidebar-search {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--bs-border-color);
}
.offcanvas-sidebar .sidebar-divider {
  height: 1px;
  background: var(--bs-border-color);
  margin: 0.5rem 1rem;
}
.offcanvas-sidebar .theme-toggle {
  width: 100%;
  text-align: left;
  padding: 0.75rem 1.25rem !important;
  border-radius: 0;
  border: none;
  background: none;
}

.prompt-card-modern {
  border: none;
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  transition: box-shadow .25s ease, transform .2s ease;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.prompt-card-modern:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}
.prompt-card-modern .card-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #7f67b8);
  flex-shrink: 0;
}
.prompt-card-modern .card-body {
  padding: 1.25rem 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}
.prompt-card-modern .card-title {
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.35;
  margin-bottom: 0.5rem;
}
.prompt-card-modern .card-title a {
  color: inherit;
  text-decoration: none;
  transition: color .15s;
}
.prompt-card-modern .card-title a:hover {
  color: var(--accent);
}
.prompt-card-modern .card-meta {
  font-size: 0.8rem;
  color: var(--bs-secondary-color);
  margin-top: auto;
  padding-top: 0.75rem;
}
.prompt-card-modern .card-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}
.prompt-card-modern .btn-action {
  font-weight: 500;
  border-radius: 8px;
  padding: 0.4rem 0.85rem;
  font-size: 0.875rem;
}
.prompt-card-modern .badge-category {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.search-bar-modern {
  background: var(--bs-body-bg);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  box-shadow: var(--card-shadow);
  margin-bottom: 1.5rem;
}
.search-bar-modern .form-control,
.search-bar-modern .form-select {
  border-radius: 8px;
  border-color: var(--bs-border-color);
}
.search-bar-modern .btn-search {
  border-radius: 8px;
  font-weight: 500;
  padding: 0.5rem 1.25rem;
}

.page-title-modern {
  font-weight: 700;
  font-size: 1.75rem;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.footer-modern {
  margin-top: auto;
  padding: 2rem 0;
  background: var(--primary-dark) !important;
  border-top: none;
}
.footer-modern a {
  text-decoration: none;
  opacity: 0.85;
  transition: opacity .15s, color .15s;
}
.footer-modern a:hover {
  opacity: 1;
  color: var(--accent-teal) !important;
}

[data-bs-theme="dark"] .prompt-card-modern .card-title a {
  color: var(--bs-body-color);
}
[data-bs-theme="dark"] .prompt-card-modern .card-title a:hover {
  color: var(--bs-primary);
}

/* Auth pages: login, register, forgot password */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: linear-gradient(160deg, #fbfcfc 0%, #dadfe4 50%, #e8ecf0 100%);
}
[data-bs-theme="dark"] .auth-page {
  background: linear-gradient(160deg, #051a2d 0%, var(--primary-dark) 50%, #0a1628 100%);
}
.auth-card {
  width: 100%;
  max-width: 420px;
  border: none;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(7,39,65,.12), 0 2px 8px rgba(0,0,0,.06);
  overflow: hidden;
}
[data-bs-theme="dark"] .auth-card {
  box-shadow: 0 8px 32px rgba(0,0,0,.25);
}
.auth-card-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent-teal));
}
.auth-card .card-body {
  padding: 2rem 1.75rem;
}
.auth-card .auth-title {
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: var(--bs-body-color);
}
.auth-card .form-label {
  font-weight: 500;
  margin-bottom: 0.35rem;
}
.auth-card .form-control {
  border-radius: 10px;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--bs-border-color);
}
.auth-card .form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.15);
}
/* Pricing card CTA when primary (Pro) */
.btn-cta-primary { background-color: var(--primary); border-color: var(--primary); }
.btn-cta-primary:hover { background-color: var(--primary); border-color: var(--primary); filter: brightness(1.05); }
.card-shadow-primary { box-shadow: 0 8px 24px rgba(52,138,220,.25); }

.auth-card .btn-primary {
  border-radius: 10px;
  padding: 0.65rem 1rem;
  font-weight: 600;
  background: var(--primary);
  border: none;
}
.auth-card .btn-primary:hover {
  background: #2a7ac4;
  filter: brightness(1.05);
}
.auth-card .alert {
  border-radius: 10px;
}
.auth-links {
  font-size: 0.9rem;
  margin-top: 1.25rem;
}
.auth-links a {
  color: var(--accent);
  font-weight: 500;
  text-decoration: none;
}
.auth-links a:hover {
  text-decoration: underline;
}
.auth-back {
  margin-top: 1.5rem;
  font-size: 0.9rem;
}
.auth-back a {
  color: var(--bs-secondary-color);
  text-decoration: none;
}
.auth-back a:hover {
  color: var(--primary);
}