/* thecodechest.cc - shared styles, mobile-first */

:root {
  --bg-dark: #0d0f1a;
  --bg-black: #000000;
  --bg-light: #ffffff;
  --bg-card: rgba(26, 28, 48, 0.85);
  --border-glow: rgba(138, 100, 255, 0.5);
  --accent-purple: #8a64ff;
  --accent-blue: #5b8def;
  --text: #e8e8f0;
  --text-muted: #a0a0b8;
  --text-dark: #1a1a2e;
  --success: #4ade80;
  --danger: #f87171;
  --gradient-text: linear-gradient(135deg, #a78bfa 0%, #60a5fa 100%);
  --gradient-bg: linear-gradient(90deg, #6a1b9a 0%, #4a148c 50%, #3d0d6b 100%);
  --shadow-glow: 0 0 20px rgba(138, 100, 255, 0.2);
  --font-sans: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: linear-gradient(160deg, #0d0f1a 0%, #1a1d35 50%, #0f1222 100%);
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header & nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-dark);
  border-bottom: 1px solid rgba(138, 100, 255, 0.25);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
  min-height: 52px;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  display: block;
}

.logo-img {
  display: block;
  height: 42px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  vertical-align: middle;
}

.logo span {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.nav-list a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--accent-purple);
  text-decoration: none;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-glow);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .nav-toggle {
    display: block;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border-glow);
    padding: 1rem;
    flex-direction: column;
  }

  .nav-list.is-open {
    display: flex;
  }
}

/* Hero / page title */
.hero {
  text-align: center;
  padding: 2.5rem 0 2rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 40px rgba(138, 100, 255, 0.3);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-glow);
}

.card h2 {
  margin: 0 0 1rem;
  font-size: 1.35rem;
  color: var(--text);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: var(--text);
}

/* Quick summary style */
.summary-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.summary-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.summary-list li:last-child {
  margin-bottom: 0;
}

.summary-list .icon {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(138, 100, 255, 0.2);
  border-radius: 8px;
  color: var(--accent-purple);
}

/* Featured card: image + text + pros/cons + CTA */
.featured-card {
  display: grid;
  gap: 1.25rem;
}

.featured-card .media {
  border-radius: 10px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.2);
}

.featured-card .media img {
  width: 100%;
  object-fit: cover;
}

.featured-card .pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 600px) {
  .featured-card .pros-cons {
    grid-template-columns: 1fr;
  }
}

.pros-cons h4 {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.pros-cons ul {
  margin: 0;
  padding-left: 1.25rem;
}

.pros-cons .pros li {
  color: var(--success);
}

.pros-cons .cons li {
  color: var(--danger);
}

.btn-cta {
  display: inline-block;
  width: 100%;
  text-align: center;
  padding: 0.9rem 1.5rem;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.15s;
}

.btn-cta:hover {
  opacity: 0.95;
  transform: translateY(1px);
  text-decoration: none;
  color: #fff;
}

/* Text blocks */
.text-block {
  margin-bottom: 1.5rem;
}

.text-block p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.text-block p:last-child {
  margin-bottom: 0;
}

/* Table */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
}

.compare-table th,
.compare-table td {
  padding: 0.75rem;
  text-align: left;
  border: 1px solid rgba(138, 100, 255, 0.25);
}

.compare-table th {
  background: rgba(138, 100, 255, 0.15);
  color: var(--text);
  font-weight: 600;
}

.compare-table td {
  color: var(--text-muted);
}

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
}

/* Key features section */
.key-features h2 {
  margin: 0 0 1rem;
  font-size: 1.35rem;
  color: var(--text);
}

.key-features .intro {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.feature-group {
  margin-bottom: 1.5rem;
}

.feature-group:last-child {
  margin-bottom: 0;
}

.feature-group h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.5rem;
}

.feature-group .icon {
  color: var(--accent-purple);
}

.feature-group ul {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-muted);
}

/* Main content spacing */
main {
  padding-bottom: 3rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(138, 100, 255, 0.2);
  padding: 1.5rem 0;
  margin-top: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--accent-purple);
}

/* Forms (Contact) */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--text);
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: rgba(26, 28, 48, 0.9);
  border: 1px solid var(--border-glow);
  border-radius: 8px;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(138, 100, 255, 0.2);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* Utility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========== Home page: full-width sections, waves ========== */
.page-home main {
  padding-bottom: 0;
}

.hero-block {
  position: relative;
  background: var(--bg-dark);
  padding: 3rem 0 4rem;
  text-align: center;
  overflow: hidden;
  border-bottom: 1px solid rgba(138, 100, 255, 0.1);
}

.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image: radial-gradient(circle at 20% 50%, var(--accent-purple) 1px, transparent 1px),
    radial-gradient(circle at 80% 80%, var(--accent-blue) 1px, transparent 1px);
  background-size: 40px 40px, 60px 60px;
}

.hero-block-inner {
  position: relative;
}

.hero-block h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.hero-sub {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
  color: var(--text-muted);
}

.hero-desc {
  margin: 0 auto 1.75rem;
  max-width: 520px;
  color: var(--text-muted);
  line-height: 1.65;
  font-size: 0.95rem;
}

.hero-block .btn-cta {
  width: auto;
  padding: 0.9rem 2rem;
}

/* Wave dividers */
.wave {
  display: block;
  width: 100%;
  line-height: 0;
  margin: 0;
}

.wave svg {
  width: 100%;
  height: 48px;
  display: block;
}

@media (min-width: 768px) {
  .wave svg {
    height: 56px;
  }
}

/* Full-width sections */
.section {
  padding: 3rem 0;
}

.section-light {
  background: var(--bg-light);
  color: var(--text-dark);
}

.page-home .section-light:first-of-type {
  padding-top: 2.5rem;
}

.section-light p,
.section-light h2 {
  color: var(--text-dark);
}

.section-dark {
  background: var(--bg-black);
  color: var(--text);
}

.section-dark .section-title,
.section-dark h2,
.section-dark p,
.section-dark li {
  color: var(--text);
}

.section-gradient {
  background: var(--gradient-bg);
  color: var(--text);
}

.section-gradient .section-title,
.section-gradient p {
  color: var(--text);
}

.section-title {
  margin: 0 0 1.5rem;
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  text-align: center;
}

.section-title-dark {
  color: var(--text-dark);
}

.section-keywords {
  padding-top: 0;
  padding-bottom: 3rem;
}

.keywords-line {
  text-align: center;
  margin: 0;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.9);
}

/* Two-column layout (text left, image right) */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.two-col-text h2 {
  margin: 1.5rem 0 0.5rem;
  font-size: 1.35rem;
}

.two-col-text h2:first-child {
  margin-top: 0;
}

.two-col-text p {
  margin: 0 0 1rem;
}

.two-col-media {
  display: flex;
  justify-content: center;
  align-items: center;
}

.two-col-media img {
  max-width: 280px;
  width: 100%;
  height: auto;
}

@media (max-width: 768px) {
  .two-col {
    grid-template-columns: 1fr;
  }

  .two-col-media {
    order: -1;
  }

  .two-col-media img {
    max-width: 240px;
  }
}

/* Three-column: steps (numbers) */
.three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 1rem;
}

.step {
  text-align: center;
}

.step-num {
  display: block;
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent-purple);
  margin-bottom: 0.75rem;
}

.step p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.section-dark .step p {
  color: var(--text);
}

@media (max-width: 768px) {
  .three-col {
    grid-template-columns: 1fr;
  }
}

/* Three-column: categories (icons) */
.categories .category {
  text-align: center;
}

.category-icon {
  display: block;
  font-size: 2rem;
  color: var(--accent-purple);
  margin-bottom: 0.5rem;
}

.category p {
  margin: 0;
  color: var(--text-dark);
  font-size: 0.95rem;
}

.section-list {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

.section-list li {
  margin-bottom: 0.35rem;
}

.section-dark .section-list li {
  color: var(--text);
}

/* Footer on home: no top border, same dark bg */
.site-footer-home {
  margin-top: 0;
  border-top: none;
  background: var(--bg-dark);
}