/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary: #0ea5e9;
  --accent: #06b6d4;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --dark-3: #334155;
  --text: #334155;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --bg-light: #f8fafc;
  --white: #ffffff;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --error: #ef4444;
  --error-bg: #fef2f2;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
  --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0,0,0,0.25);
  --radius: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

img { max-width: 100%; }

/* ===================================
   Layout
   =================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--dark);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h3 { font-size: 1.25rem; }

.gradient-text {
  background: linear-gradient(135deg, #60a5fa 0%, #38bdf8 50%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===================================
   Buttons
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn-sm {
  padding: 7px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  background: rgba(37, 99, 235, 0.04);
}

.btn-outline-light {
  background: transparent;
  color: rgba(255,255,255,0.9);
  border-color: rgba(255,255,255,0.25);
}

.btn-outline-light:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
}

.btn-ghost {
  background: transparent;
  color: rgba(255,255,255,0.85);
  border-color: transparent;
}

.btn-ghost:hover {
  color: var(--white);
  background: rgba(255,255,255,0.1);
}

.btn-white {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
}

.btn-white:hover {
  background: #f1f5f9;
  transform: translateY(-1px);
}

.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.4);
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
}

/* ===================================
   Navbar
   =================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.08);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-links li a {
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}

.nav-links li a:not(.btn):hover {
  color: var(--white);
  background: rgba(255,255,255,0.08);
}

.nav-links li .btn {
  margin-left: 4px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

/* Light navbar for auth pages */
.navbar--light {
  position: static;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.navbar--light .nav-brand {
  color: var(--dark);
}

.navbar--light .nav-links li a:not(.btn) {
  color: var(--text-muted);
}

.navbar--light .nav-links li a:not(.btn):hover {
  color: var(--dark);
  background: var(--bg-light);
}

/* ===================================
   Hero
   =================================== */
.hero {
  min-height: 100vh;
  background: var(--dark);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.25) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 60% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.3);
  color: #93c5fd;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
  letter-spacing: 0.03em;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #60a5fa;
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  color: var(--white);
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat strong {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}

.hero-stat span {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  margin-top: 3px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-stat-divider {
  width: 1px;
  height: 32px;
  background: rgba(255,255,255,0.1);
}

/* Dashboard mockup */
.hero-visual {
  display: flex;
  justify-content: center;
}

.dashboard-card {
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-xl);
  padding: 24px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-xl), 0 0 80px rgba(37, 99, 235, 0.15);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.dashboard-title {
  font-weight: 600;
  color: var(--white);
  font-size: 0.9rem;
}

.dashboard-usage {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}

.dashboard-usage span {
  color: var(--primary-light);
  font-weight: 600;
}

.storage-bar {
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 100px;
  margin-bottom: 20px;
  overflow: hidden;
}

.storage-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 100px;
}

.file-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: var(--radius);
  transition: background var(--transition);
  cursor: pointer;
}

.file-item:hover {
  background: rgba(255,255,255,0.05);
}

.file-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.file-icon.file-folder { background: rgba(245, 158, 11, 0.15); }
.file-icon.file-video  { background: rgba(139, 92, 246, 0.15); }
.file-icon.file-doc    { background: rgba(37, 99, 235, 0.15); }
.file-icon.file-image  { background: rgba(16, 185, 129, 0.15); }

.file-info {
  flex: 1;
  min-width: 0;
}

.file-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-meta {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  margin-top: 2px;
}

.file-date {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
  flex-shrink: 0;
}

.dashboard-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
}

.activity-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4b5563;
  flex-shrink: 0;
}

.activity-dot.active {
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
  animation: pulse-dot 2s ease infinite;
}

/* ===================================
   Trust section
   =================================== */
.trust-section {
  background: var(--dark-2);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 36px 0;
}

.trust-label {
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  margin-bottom: 20px;
}

.trust-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 32px;
}

.trust-logo {
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255,255,255,0.2);
  letter-spacing: -0.03em;
  transition: color var(--transition);
  cursor: default;
}

.trust-logo:hover {
  color: rgba(255,255,255,0.4);
}

/* ===================================
   Sections
   =================================== */
.section {
  padding: 96px 0;
}

.section--dark {
  background: var(--dark);
}

.section--gray {
  background: var(--bg-light);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  margin-bottom: 14px;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto;
}

.section--dark .section-header h2 {
  color: var(--white);
}

.section--dark .section-header p {
  color: rgba(255,255,255,0.55);
}

.section-badge {
  display: inline-block;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 100px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-badge--light {
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.7);
}

/* ===================================
   Features
   =================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-card--large {
  grid-column: span 2;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 24px;
  align-items: start;
}

.feature-card--large h3,
.feature-card--large p,
.feature-card--large .feature-list {
  grid-column: 2;
}

.feature-card--large .feature-icon {
  grid-row: span 3;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  flex-shrink: 0;
}

.feature-card--large .feature-icon {
  margin-top: 4px;
}

.feature-icon--blue   { background: rgba(37, 99, 235, 0.1);  color: var(--primary); }
.feature-icon--green  { background: rgba(16, 185, 129, 0.1); color: #059669; }
.feature-icon--purple { background: rgba(139, 92, 246, 0.1); color: #7c3aed; }
.feature-icon--orange { background: rgba(249, 115, 22, 0.1); color: #ea580c; }
.feature-icon--cyan   { background: rgba(6, 182, 212, 0.1);  color: #0891b2; }
.feature-icon--pink   { background: rgba(236, 72, 153, 0.1); color: #db2777; }

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--dark);
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.feature-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.feature-list li {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.feature-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-light);
  flex-shrink: 0;
}

/* ===================================
   Security section
   =================================== */
.security-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.security-content h2 {
  color: var(--white);
  margin-bottom: 16px;
}

.security-content > p {
  color: rgba(255,255,255,0.6);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 36px;
}

.security-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.security-feature {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.security-check {
  width: 24px;
  height: 24px;
  background: rgba(37, 99, 235, 0.2);
  border: 1px solid rgba(37, 99, 235, 0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: #60a5fa;
  flex-shrink: 0;
  margin-top: 2px;
}

.security-feature strong {
  color: var(--white);
  font-size: 0.95rem;
  display: block;
  margin-bottom: 3px;
}

.security-feature p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
}

.security-card {
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-xl);
  padding: 40px;
  text-align: center;
  box-shadow: var(--shadow-xl);
}

.security-shield {
  margin-bottom: 32px;
}

.security-cert {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.cert-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  padding: 14px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}

.cert-badge {
  display: inline-block;
  background: rgba(37, 99, 235, 0.2);
  color: #93c5fd;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

/* ===================================
   Pricing
   =================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  background: var(--white);
  transition: box-shadow var(--transition);
}

.pricing-card:hover {
  box-shadow: var(--shadow-md);
}

.pricing-card--featured {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary), var(--shadow-lg);
  background: linear-gradient(180deg, rgba(37,99,235,0.03) 0%, var(--white) 100%);
}

.pricing-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 100px;
  white-space: nowrap;
  letter-spacing: 0.03em;
}

.pricing-header h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--dark-3);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 3px;
  margin-bottom: 8px;
}

.price-currency {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark);
}

.price-amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--dark);
  line-height: 1;
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pricing-header p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.pricing-features {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.pricing-features li {
  font-size: 0.88rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.pricing-features li::before {
  content: '✓';
  color: var(--success);
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* ===================================
   CTA Section
   =================================== */
.cta-section {
  background: linear-gradient(135deg, #1d4ed8 0%, #0369a1 100%);
  padding: 96px 0;
}

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

.cta-inner h2 {
  color: var(--white);
  margin-bottom: 16px;
}

.cta-inner p {
  color: rgba(255,255,255,0.7);
  font-size: 1.1rem;
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===================================
   Footer
   =================================== */
.footer {
  background: var(--dark);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .nav-brand {
  margin-bottom: 14px;
}

.footer-brand > p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  color: rgba(255,255,255,0.35);
  transition: color var(--transition);
}

.footer-social a:hover {
  color: rgba(255,255,255,0.75);
}

.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  color: rgba(255,255,255,0.7);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 0.87rem;
  color: rgba(255,255,255,0.4);
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: rgba(255,255,255,0.8);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.3);
}

/* ===================================
   Auth pages (login / register)
   =================================== */
.auth-page {
  min-height: 100vh;
  background: var(--bg-light);
  display: flex;
  flex-direction: column;
}

.auth-body {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.auth-left {
  background: var(--dark);
  padding: 60px 48px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.auth-left::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 40%, rgba(37, 99, 235, 0.3) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 80%, rgba(6, 182, 212, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.auth-left-content {
  position: relative;
}

.auth-left-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 60px;
}

.auth-tagline {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 16px;
}

.auth-tagline-sub {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
}

.auth-perks {
  position: relative;
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.auth-perk {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
}

.auth-perk-icon {
  width: 32px;
  height: 32px;
  background: rgba(37, 99, 235, 0.2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.auth-left-footer {
  position: relative;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.25);
}

.auth-right {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 48px;
}

.auth-form-box {
  width: 100%;
  max-width: 420px;
}

.auth-form-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}

.auth-form-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.auth-form-subtitle a {
  color: var(--primary);
  font-weight: 600;
}

.auth-form-subtitle a:hover {
  text-decoration: underline;
}

/* ===================================
   Form elements
   =================================== */
.form-group {
  margin-bottom: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark-3);
  margin-bottom: 7px;
}

.form-input {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--dark);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  font-family: inherit;
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-input.error {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input::placeholder {
  color: #94a3b8;
}

.form-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 5px;
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 20px 0;
}

.form-check input[type="checkbox"] {
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  margin-top: 2px;
  accent-color: var(--primary);
  flex-shrink: 0;
}

.form-check-label {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.form-check-label a {
  color: var(--primary);
  font-weight: 500;
}

.form-footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.form-forgot {
  font-size: 0.83rem;
  color: var(--primary);
  font-weight: 500;
}

.form-forgot:hover {
  text-decoration: underline;
}

.btn-submit {
  width: 100%;
  justify-content: center;
  padding: 13px 24px;
  font-size: 0.95rem;
  border-radius: var(--radius);
  margin-top: 4px;
  position: relative;
}

.btn-submit .btn-spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn-submit.loading .btn-text { display: none; }
.btn-submit.loading .btn-spinner { display: block; }
.btn-submit:disabled { opacity: 0.7; cursor: not-allowed; transform: none !important; }

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

/* ===================================
   Alert / Status messages
   =================================== */
.alert {
  display: none;
  padding: 14px 16px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  line-height: 1.5;
  margin-bottom: 20px;
  border: 1px solid transparent;
}

.alert.show { display: flex; align-items: flex-start; gap: 10px; }

.alert-icon { font-size: 1rem; flex-shrink: 0; margin-top: 1px; }

.alert--success {
  background: var(--success-bg);
  color: #065f46;
  border-color: #a7f3d0;
}

.alert--error {
  background: var(--error-bg);
  color: #991b1b;
  border-color: #fecaca;
}

.alert--info {
  background: #eff6ff;
  color: #1e3a8a;
  border-color: #bfdbfe;
}

/* Shake animation for error */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  40%       { transform: translateX(6px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}

.shake {
  animation: shake 0.4s ease;
}

/* Password strength */
.password-strength {
  margin-top: 8px;
  display: none;
}

.strength-bars {
  display: flex;
  gap: 4px;
  margin-bottom: 4px;
}

.strength-bar {
  flex: 1;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  transition: background 0.3s;
}

.strength-text {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===================================
   Responsive
   =================================== */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }

  .feature-card--large {
    grid-column: span 2;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: span 3;
  }
}

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-visual {
    display: none;
  }

  .security-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }

  .auth-body {
    grid-template-columns: 1fr;
  }

  .auth-left {
    display: none;
  }

  .auth-right {
    padding: 40px 24px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--dark);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 16px;
    z-index: 99;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li a {
    font-size: 1.1rem;
    padding: 12px 24px;
  }

  .nav-toggle {
    display: flex;
    z-index: 101;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .feature-card--large {
    grid-column: span 1;
    grid-template-columns: 1fr;
  }

  .feature-card--large .feature-icon {
    grid-row: auto;
    margin-bottom: 16px;
  }

  .feature-card--large h3,
  .feature-card--large p,
  .feature-card--large .feature-list {
    grid-column: 1;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: span 2;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-brand {
    grid-column: span 1;
  }
}