/* ============================================
   Marabeo Branding Website - Modern SaaS Design System
   Light theme, professional, enterprise-ready
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Primary - blue tone for CTAs */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-300: #93c5fd;
  --color-primary-400: #60a5fa;
  --color-primary-500: #3b82f6;
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;

  /* Neutrals */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Semantic - muted */
  --color-success: #059669;
  --color-success-light: #d1fae5;
  --color-warning: #d97706;
  --color-warning-light: #fef3c7;
  --color-danger: #dc2626;
  --color-danger-light: #fee2e2;

  /* Layout & spacing */
  --section-padding-y: 5rem;
  --section-padding-y-mobile: 3rem;
  --container-max: 1280px;
  --content-max: 720px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Inter', var(--font-sans);
  --text-hero: 3.5rem;
  --text-hero-mobile: 2.25rem;
  --text-h1: 2.25rem;
  --text-h2: 1.875rem;
  --text-body: 1.0625rem;
  --text-small: 0.875rem;
  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* Shadows - soft */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.06), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.06), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.05), 0 4px 12px rgba(0, 0, 0, 0.04);

  /* Border radius - subtle */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Base ---------- */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-800);
  background-color: #ffffff;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Typography ---------- */
.saas-hero-title {
  font-size: var(--text-hero-mobile);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  color: var(--color-gray-900);
}

@media (min-width: 768px) {
  .saas-hero-title {
    font-size: var(--text-hero);
  }
}

.saas-hero-subtitle {
  font-size: 1.125rem;
  line-height: var(--leading-relaxed);
  color: var(--color-gray-600);
}

@media (min-width: 768px) {
  .saas-hero-subtitle {
    font-size: 1.25rem;
  }
}

.saas-section-title {
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-gray-900);
}

@media (min-width: 768px) {
  .saas-section-title {
    font-size: 2.25rem;
  }
}

.saas-section-subtitle {
  font-size: 1.0625rem;
  color: var(--color-gray-600);
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Layout ---------- */
.saas-container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

@media (min-width: 640px) {
  .saas-container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .saas-container {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

.saas-section {
  padding-top: var(--section-padding-y-mobile);
  padding-bottom: var(--section-padding-y-mobile);
}

@media (min-width: 768px) {
  .saas-section {
    padding-top: var(--section-padding-y);
    padding-bottom: var(--section-padding-y);
  }
}

.saas-section-alt {
  background-color: var(--color-gray-50);
}

/* ---------- Navigation ---------- */
.saas-nav {
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: 50;
}

.saas-nav-link {
  color: var(--color-gray-600);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.saas-nav-link:hover {
  color: var(--color-gray-900);
}

.saas-nav-link:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.saas-nav-link.active {
  color: var(--color-primary-600);
}

.saas-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff;
  background-color: var(--color-primary-600);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.saas-nav-cta:hover {
  background-color: var(--color-primary-700);
}

#mobile-menu-btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

/* Mobile menu */
.saas-mobile-menu {
  display: none;
  padding: 1rem 0;
  border-top: 1px solid var(--color-gray-200);
}

.saas-mobile-menu.open {
  display: block;
}

.saas-mobile-menu a {
  display: block;
  padding: 0.75rem 0;
  color: var(--color-gray-700);
  font-weight: 500;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary-600);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-700);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--color-primary-600);
  border: 2px solid var(--color-gray-200);
}

.btn-secondary:hover {
  background-color: var(--color-gray-50);
  border-color: var(--color-gray-300);
}

.btn:focus-visible,
.saas-nav-cta:focus-visible {
  outline: 2px solid var(--color-primary-400);
  outline-offset: 2px;
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1.0625rem;
  border-radius: var(--radius-lg);
}

/* ---------- Cards ---------- */
.saas-card {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-gray-100);
  padding: 1.5rem;
  transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
}

@media (min-width: 768px) {
  .saas-card {
    padding: 1.75rem;
  }
}

.saas-card:hover {
  box-shadow: var(--shadow-lg);
}

.saas-card-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-primary-100) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.saas-card-icon svg {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--color-primary-600);
}

/* ---------- Form ---------- */
.form-input {
  width: 100%;
  padding: 0.625rem 1rem;
  font-size: 0.9375rem;
  color: var(--color-gray-900);
  background-color: #ffffff;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-sizing: border-box;
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

.form-input:focus {
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
  margin-bottom: 0.375rem;
}

.form-error {
  color: var(--color-danger);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

/* ---------- Hero ---------- */
.saas-hero {
  /* Branded hero background using primary palette */
  background:
    radial-gradient(ellipse at top left, rgba(37, 99, 235, 0.14) 0%, transparent 55%),
    radial-gradient(ellipse at bottom right, rgba(37, 99, 235, 0.08) 0%, transparent 55%),
    linear-gradient(180deg, var(--color-primary-50) 0%, #ffffff 45%, var(--color-gray-50) 100%);
  position: relative;
  overflow: hidden;
}

.saas-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 20%, rgba(37, 99, 235, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

/* ---------- CTA Section ---------- */
.saas-cta-section {
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-primary-700) 100%);
  color: #ffffff;
  text-align: center;
}

.saas-cta-section .saas-cta-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
}

@media (min-width: 768px) {
  .saas-cta-section .saas-cta-title {
    font-size: 2.25rem;
  }
}

.saas-cta-section .saas-cta-subtitle {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
}

.saas-cta-section .btn-primary {
  background-color: #ffffff;
  color: var(--color-primary-600);
}

.saas-cta-section .btn-primary:hover {
  background-color: var(--color-gray-50);
}

/* ---------- Footer ---------- */
.saas-footer {
  background-color: var(--color-gray-900);
  color: #ffffff;
  padding-top: 3rem;
  padding-bottom: 1.5rem;
}

@media (min-width: 768px) {
  .saas-footer {
    padding-top: 4rem;
  }
}

.saas-footer h4 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-300);
  margin-bottom: 1rem;
}

.saas-footer a {
  color: var(--color-gray-400);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.saas-footer a:hover {
  color: #ffffff;
}

.saas-footer-copyright {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-gray-800);
  font-size: 0.875rem;
  color: var(--color-gray-500);
  text-align: center;
}

/* ---------- How It Works steps ---------- */
.saas-step-number {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-100);
  color: var(--color-primary-600);
  font-weight: 700;
  font-size: 0.9375rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ---------- Testimonial card ---------- */
.saas-testimonial-card {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-gray-100);
}

.saas-testimonial-quote {
  font-size: 1rem;
  line-height: var(--leading-relaxed);
  color: var(--color-gray-700);
  margin-bottom: 1rem;
}

.saas-testimonial-author {
  font-weight: 600;
  color: var(--color-gray-900);
  font-size: 0.9375rem;
}

.saas-testimonial-role {
  font-size: 0.875rem;
  color: var(--color-gray-500);
}

/* ---------- Utilities ---------- */
.saas-text-balance {
  text-wrap: balance;
}

/* Section scroll animation */
.section-animate {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.section-animate.section-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Loading spinner */
.spinner {
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary-500);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 0.8s linear infinite;
  margin: 0 auto;
}

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

/* Card hover (for Tailwind-backed pages) */
.card-hover {
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}