/* ============================================
   InjectApp.net – Light theme, purple accents
   Mobile-first, responsive (Applob-style layout)
   ============================================ */

:root {
  --color-bg: #ffffff;
  --color-surface: #f8f7fc;
  --color-surface-alt: #f0eef8;
  --color-text: #1a1a2e;
  --color-text-muted: #4a4a5a;
  --color-accent: #6c5ce7;
  --color-accent-hover: #5b4bd4;
  --color-accent-light: #e8e5f9;
  --color-border: #e0ddee;
  --color-success: #00b894;
  --color-error: #d63031;
  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-btn: 10px;
  --header-h: 56px;
  --max-content: 720px;
  --transition: 0.2s ease;
  /* Hero gradient */
  --hero-from: #f5f3ff;
  --hero-mid: #ede9fe;
  --hero-to: #e0dbf7;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container.narrow,
.narrow {
  max-width: var(--max-content);
}

/* ----- Header ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}
.logo:hover {
  text-decoration: none;
  opacity: 0.85;
}
.logo img {
  display: block;
  height: 40px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  border-radius: var(--radius);
  transition: background var(--transition);
}
.nav-toggle:hover {
  background: var(--color-surface-alt);
}
.nav-toggle[aria-expanded="true"] .hamburger {
  background: transparent;
}
.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: translateY(0) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: translateY(0) rotate(-45deg);
}

.hamburger,
.hamburger::before,
.hamburger::after {
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition), background var(--transition);
}
.hamburger {
  position: relative;
}
.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
}
.hamburger::before {
  transform: translateY(-6px);
}
.hamburger::after {
  transform: translateY(6px);
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.main-nav a {
  display: block;
  padding: var(--space-md) var(--space-lg);
  color: var(--color-text);
  border-radius: var(--radius);
}
.main-nav a:hover {
  background: var(--color-surface-alt);
  color: var(--color-accent);
  text-decoration: none;
}

.main-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 8px 16px rgba(0,0,0,0.06);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.main-nav.is-open {
  max-height: 280px;
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
  .main-nav {
    position: static;
    max-height: none;
    box-shadow: none;
    border: none;
  }
  .main-nav ul {
    flex-direction: row;
    gap: var(--space-xs);
  }
  .main-nav a {
    padding: var(--space-sm) var(--space-md);
  }
}

/* ----- Buttons ----- */
.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}
.btn-outline:hover {
  background: var(--color-accent-light);
  color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  text-decoration: none;
}

.btn-hero {
  margin-top: var(--space-md);
  padding: var(--space-md) var(--space-2xl);
  font-size: 1.0625rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

/* ----- Hero ----- */
.hero {
  position: relative;
  padding: var(--space-2xl) 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--hero-from) 0%, var(--hero-mid) 40%, var(--hero-to) 70%, #faf9fc 100%);
  opacity: 1;
}
.hero-bg::before {
  content: "";
  position: absolute;
  width: 80%;
  height: 80%;
  top: -20%;
  right: -20%;
  background: radial-gradient(circle, rgba(108, 92, 231, 0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero-bg::after {
  content: "";
  position: absolute;
  width: 60%;
  height: 60%;
  bottom: -10%;
  left: -10%;
  background: radial-gradient(circle, rgba(108, 92, 231, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero h1 {
  margin: 0 0 var(--space-sm);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
}

.hero-sub {
  margin: 0 0 var(--space-lg);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
}

.hero-heading {
  margin: 0 0 var(--space-md);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.hero-desc {
  margin: 0;
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

@media (min-width: 768px) {
  .hero {
    padding: var(--space-2xl) 0;
  }
  .hero h1 {
    font-size: 2.25rem;
  }
  .hero-sub {
    font-size: 1.25rem;
  }
  .hero-heading {
    font-size: 1.375rem;
  }
}

/* ----- Cards section ----- */
.cards-section {
  padding: var(--space-2xl) 0;
  background: var(--color-bg);
}

.section-title {
  margin: 0 0 var(--space-md);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: center;
}

.section-intro {
  margin: 0 auto var(--space-xl);
  max-width: 640px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .cards-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
  }
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  box-shadow: 0 8px 24px rgba(108, 92, 231, 0.1);
  border-color: var(--color-accent-light);
}

.card-icon {
  display: block;
  font-size: 1.75rem;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.card-title {
  margin: 0 0 var(--space-md);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
}

.card-text {
  margin: 0 0 var(--space-lg);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.card .btn {
  margin-top: 0;
}

/* ----- Wave separator ----- */
.wave {
  display: block;
  width: 100%;
  height: 48px;
  background: var(--color-bg);
  margin-top: -1px;
}

.wave-top {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 48' preserveAspectRatio='none'%3E%3Cpath fill='%23f8f7fc' d='M0 48h1440V24c-120 12-240 12-360 0-120-12-240-12-360 0S600 36 720 24c120-12 240-12 360 0s240 12 360 0v24z'/%3E%3C/svg%3E") no-repeat center bottom;
  background-size: 100% 48px;
  margin-bottom: 0;
}

/* ----- How to Use ----- */
.how-to-section {
  position: relative;
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
}

.how-to-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: start;
}

@media (min-width: 900px) {
  .how-to-inner {
    grid-template-columns: 1fr 320px;
    gap: var(--space-2xl);
  }
}

.how-to-content .section-title {
  text-align: left;
}

.steps-list {
  margin: 0 0 var(--space-lg);
  padding-left: 1.25rem;
  color: var(--color-text);
}
.steps-list li {
  margin-bottom: var(--space-sm);
}

.sub-heading {
  margin: var(--space-lg) 0 var(--space-sm);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
}

.how-to-content p {
  margin: 0 0 var(--space-md);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.how-to-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.how-to-phone-img {
  width: 100%;
  max-width: 220px;
  height: auto;
  display: block;
  border-radius: 24px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

@media (min-width: 900px) {
  .how-to-phone-img {
    max-width: 280px;
  }
}

/* ----- Legal & Safe section ----- */
.legal-safe-section {
  padding: var(--space-2xl) 0;
  background: var(--color-bg);
}

.legal-safe-section .section-title {
  margin-bottom: var(--space-lg);
}

.legal-safe-content {
  max-width: 720px;
  margin: 0 auto var(--space-xl);
  text-align: center;
}

.legal-safe-content p,
.legal-safe-content ul {
  margin: 0 0 var(--space-md);
  color: var(--color-text-muted);
  text-align: center;
}

.legal-safe-content ul {
  list-style: none;
  padding-left: 0;
}
.legal-safe-content li {
  margin-bottom: var(--space-xs);
}

.keywords-heading {
  margin: var(--space-xl) 0 var(--space-md);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: center;
}

.keywords-line {
  margin: 0 auto var(--space-lg);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  text-align: center;
  max-width: 800px;
  line-height: 1.7;
}

.legal-safe-section .btn {
  display: block;
  margin: 0 auto;
  width: fit-content;
}

/* ----- Content section (full article) ----- */
.content-section {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
}

.content-section .container.narrow,
.content-section .narrow {
  padding: 0 var(--space-md);
}

.content-section h2 {
  margin: var(--space-2xl) 0 var(--space-md);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--color-text);
}
.content-section h2:first-of-type {
  margin-top: 0;
}

.content-section h3 {
  margin: var(--space-lg) 0 var(--space-sm);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}

.content-section p {
  margin: 0 0 var(--space-md);
  color: var(--color-text-muted);
}

.content-section ul {
  margin: 0 0 var(--space-md);
  padding-left: 1.25rem;
  color: var(--color-text-muted);
}

.content-section li {
  margin-bottom: var(--space-xs);
}

.content-section a {
  color: var(--color-accent);
}

/* ----- FAQ ----- */
.faq-section {
  padding: var(--space-2xl) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.faq-section .section-title,
.faq-section h2 {
  margin: 0 0 var(--space-lg);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-item summary {
  padding: var(--space-md) var(--space-lg);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  color: var(--color-text);
  transition: background var(--transition);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  content: "−";
}
.faq-item summary:hover {
  background: var(--color-surface-alt);
}

.faq-item p {
  margin: 0;
  padding: 0 var(--space-lg) var(--space-md);
  padding-top: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* ----- Page hero (Privacy, Terms, Contact) ----- */
.page-hero {
  padding: var(--space-xl) 0;
  background: linear-gradient(135deg, var(--hero-from) 0%, var(--hero-mid) 100%);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  margin: 0 0 var(--space-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.page-hero p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

@media (min-width: 768px) {
  .page-hero h1 {
    font-size: 1.75rem;
  }
}

/* ----- Legal pages ----- */
.content-section.legal h2 {
  margin-top: var(--space-xl);
  color: var(--color-text);
}
.content-section.legal h2:first-of-type {
  margin-top: 0;
}
.content-section.legal {
  background: var(--color-bg);
}

/* ----- Contact form ----- */
.contact-form {
  margin: var(--space-lg) 0;
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
  color: var(--color-text);
}

.required {
  color: var(--color-error);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.8;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}
.form-group input.error,
.form-group textarea.error {
  border-color: var(--color-error);
}

.form-error {
  display: block;
  margin-top: var(--space-xs);
  font-size: 0.875rem;
  color: var(--color-error);
}

.form-status {
  margin-top: var(--space-md);
  font-size: 0.9375rem;
}
.form-status.success {
  color: var(--color-success);
}
.form-status.error {
  color: var(--color-error);
}

/* ----- Footer ----- */
.site-footer {
  padding: var(--space-xl) 0;
  margin-top: auto;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}
.footer-nav a {
  color: var(--color-text-muted);
}
.footer-nav a:hover {
  color: var(--color-accent);
}

.copyright {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ----- Skip link ----- */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius);
  z-index: 200;
  transition: top 0.2s;
}
.skip-link:focus {
  top: var(--space-md);
}