/* ==========================================================================
   Serease Technologies Official Website Styles
   Theme: Precision Modern Dark / App Studio Architecture
   ========================================================================== */

:root {
  --bg-primary: #090d16;
  --bg-secondary: #0f1626;
  --bg-surface: #141c2e;
  --bg-card: rgba(22, 31, 51, 0.72);
  --bg-card-hover: rgba(30, 42, 68, 0.85);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.45);
  --border-highlight: rgba(56, 189, 248, 0.35);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-cyan: #38bdf8;
  --accent-indigo: #6366f1;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  --gradient-brand: linear-gradient(135deg, #38bdf8 0%, #6366f1 50%, #a855f7 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0) 100%);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
  min-height: 100vh;
}

/* Ambient glow accents */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.18;
}

.glow-1 {
  width: 550px;
  height: 550px;
  top: -100px;
  left: 20%;
  background: radial-gradient(circle, #6366f1, #38bdf8);
}

.glow-2 {
  width: 450px;
  height: 450px;
  top: 60vh;
  right: -50px;
  background: radial-gradient(circle, #a855f7, #38bdf8);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

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

p {
  color: var(--text-muted);
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.1);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(56, 189, 248, 0.25);
  margin-bottom: 12px;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}

.section-title {
  font-size: 2.25rem;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.04);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 10px var(--accent-emerald);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-normal);
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 26px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-outline:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.btn-block {
  width: 100%;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.82);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-mark-img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  object-fit: cover;
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.35);
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.4);
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #ffffff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-item {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 4px 0;
}

.nav-item:hover {
  color: var(--text-main);
}

.nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-cyan);
  transition: width var(--transition-fast);
}

.nav-item:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-main);
  transition: all var(--transition-fast);
}

/* Hero Section */
.hero-section {
  padding: 100px 0 80px;
  text-align: center;
}

.hero-container {
  max-width: 860px;
}

.hero-badge {
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.5rem;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: 1.2rem;
  line-height: 1.7;
  max-width: 680px;
  margin: 0 auto 36px;
  color: var(--text-muted);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.hero-highlights {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 24px 32px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  max-width: 780px;
  margin: 0 auto;
}

.highlight-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: center;
}

.highlight-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}

.highlight-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.highlight-divider {
  width: 1px;
  height: 36px;
  background: var(--border-subtle);
}

/* Products Section */
.products-section {
  padding: 80px 0;
}

.filter-tabs {
  display: inline-flex;
  gap: 8px;
  background: rgba(255, 255, 255, 0.03);
  padding: 6px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  margin-top: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.filter-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.filter-btn:hover {
  color: var(--text-main);
}

.filter-btn.active {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 28px;
}

/* Product Card */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-focus);
  background: var(--bg-card-hover);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.product-card:hover::before {
  opacity: 1;
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}

.app-icon {
  width: 58px;
  height: 58px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.app-meta-tags {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.framework-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.status-badge {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
}

.product-name {
  font-size: 1.35rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.product-tagline {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
}

.card-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.card-features li svg {
  color: var(--accent-emerald);
  flex-shrink: 0;
}

.card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
}

.btn-store {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #000000;
  color: #ffffff;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all var(--transition-fast);
}

.btn-store:hover {
  background: #1a1a1a;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-store svg {
  width: 16px;
  height: 16px;
}

.btn-details {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  background: transparent;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
}

.btn-details:hover {
  text-decoration: underline;
}

/* Tech Section */
.tech-section {
  padding: 80px 0;
  background: linear-gradient(180deg, transparent, rgba(15, 22, 38, 0.6), transparent);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform var(--transition-fast);
}

.tech-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-focus);
}

.tech-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-indigo);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.tech-title {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.tech-text {
  font-size: 0.9rem;
  line-height: 1.6;
}

/* About & Compliance Section */
.about-section {
  padding: 80px 0;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  backdrop-filter: blur(12px);
}

.about-title {
  font-size: 2rem;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.about-text {
  font-size: 1.05rem;
  margin-bottom: 18px;
  line-height: 1.7;
}

.compliance-box {
  margin-top: 36px;
  background: rgba(9, 13, 22, 0.7);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--radius-md);
  padding: 28px;
}

.compliance-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.compliance-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.compliance-list li {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  position: relative;
  padding-left: 20px;
}

.compliance-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-emerald);
  font-weight: bold;
}

.compliance-list strong {
  color: var(--text-main);
}

/* Contact Section */
.contact-section {
  padding: 80px 0 100px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  align-items: start;
}

.contact-desc {
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.detail-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.detail-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.detail-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.detail-val {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-main);
}

a.detail-val:hover {
  color: var(--accent-cyan);
  text-decoration: underline;
}

.contact-form-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(12px);
}

.form-header {
  margin-bottom: 24px;
}

.form-header h3 {
  font-size: 1.35rem;
  margin-bottom: 6px;
}

.form-header p {
  font-size: 0.88rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-control {
  width: 100%;
  padding: 12px 14px;
  background: rgba(9, 13, 22, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

select.form-control option {
  background: var(--bg-surface);
  color: var(--text-main);
}

.form-status {
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  text-align: center;
}

.form-status.success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-emerald);
}

.form-status.error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  max-width: 650px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.95);
  transition: transform var(--transition-smooth);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  padding: 36px;
}

.modal-backdrop.show .modal-dialog {
  transform: scale(1);
}

.legal-dialog {
  max-width: 800px;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 20px;
  background: transparent;
  border: none;
  font-size: 1.8rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: #ffffff;
}

.legal-content h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.legal-content h3 {
  font-size: 1.2rem;
  margin: 20px 0 8px;
  color: var(--accent-cyan);
}

.legal-content p, .legal-content ul {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
}

.legal-content ul {
  padding-left: 20px;
}

/* Footer */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 28px;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.3fr 2fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-tagline {
  margin: 16px 0 16px;
  font-size: 0.92rem;
  max-width: 320px;
}

.footer-verification {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-emerald);
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-list a {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-list a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
}

.bottom-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 12px;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--border-subtle);
    display: none;
  }

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

  .mobile-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-highlights {
    flex-direction: column;
    gap: 16px;
  }

  .highlight-divider {
    width: 60px;
    height: 1px;
  }

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

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

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

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