/* ========================================
   OnlineTechSupport.biz — Landing Page Styles
   Dark-mode-first, CSS custom properties
   ======================================== */

/* ---------- VARIABLES ---------- */
:root {
  /* Dark (default) theme colors */
  --color-bg: #0a0e1a;
  --color-bg-alt: #0d1320;
  --color-bg-card: #111827;
  --color-bg-card-hover: #162033;
  --color-text: #f0f2f5;
  --color-text-muted: #8b9bb4;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.15);

  /* Accent */
  --color-accent: #00d4a0;
  --color-accent-hover: #00b88a;

  /* Fonts */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Spacing */
  --section-spacing: 5rem;
  --border-radius: 0.75rem;
  --transition: 0.3s ease;
}

/* ---------- LIGHT THEME ---------- */
[data-theme="light"] {
  --color-bg: #f8f9fc;
  --color-bg-alt: #eef0f5;
  --color-bg-card: #ffffff;
  --color-bg-card-hover: #f4f6fb;
  --color-text: #1a1f2e;
  --color-text-muted: #5c6575;
  --color-border: rgba(0, 0, 0, 0.15);
  --color-border-strong: rgba(0, 0, 0, 0.28);
  --color-accent: #059669;
  --color-accent-hover: #047857;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- UTILITY ---------- */
.text-accent {
  color: var(--color-accent) !important;
}

.bg-alt {
  background-color: var(--color-bg-alt) !important;
}

.text-muted {
  color: var(--color-text-muted) !important;
}

/* ---------- NAVIGATION ---------- */
.navbar {
  background-color: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  transition: var(--transition);
}

[data-theme="light"] .navbar {
  background-color: rgba(248, 249, 252, 0.9);
}

.navbar-brand {
  color: var(--color-text) !important;
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
}

/* ---------- THEME TOGGLE ---------- */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--border-radius);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  line-height: 1;
}

.theme-toggle:hover {
  border-color: var(--color-accent);
  background: var(--color-bg-card);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.navbar-nav .nav-link {
  color: var(--color-text-muted) !important;
  font-weight: var(--font-weight-medium);
  font-size: 0.9rem;
  padding: 0.5rem 1rem !important;
  transition: var(--transition);
  position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
  color: var(--color-text) !important;
}

.navbar-nav .nav-link.btn-primary {
  color: var(--color-bg) !important;
  font-weight: var(--font-weight-semibold);
}

/* Ensure all headings and card titles pick up theme text color */
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  color: var(--color-text);
}

/* Dark + light theme adjustments: make h3.h5 explicit */
h3, .h5, h3.h5 {
  color: var(--color-text);
}

.navbar-toggler {
  border-color: var(--color-border-strong);
}

.navbar-toggler-icon {
  filter: invert(1);
}

[data-theme="light"] .navbar-toggler-icon {
  filter: invert(0);
}

/* ---------- BUTTONS ---------- */
.btn {
  border-radius: var(--border-radius);
  font-weight: var(--font-weight-semibold);
  padding: 0.75rem 1.5rem;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background-color: var(--color-accent) !important;
  color: var(--color-bg) !important;
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-accent-hover) !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 212, 160, 0.25);
}

.btn-outline-light {
  background-color: transparent !important;
  color: var(--color-text) !important;
  border: 1px solid var(--color-border-strong) !important;
}

.btn-outline-light:hover,
.btn-outline-light:focus {
  background-color: rgba(0, 0, 0, 0.04) !important;
  border-color: var(--color-text) !important;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  padding-top: 6rem;
  padding-bottom: 4rem;
  background: linear-gradient(135deg, var(--color-bg) 0%, #0f1628 50%, var(--color-bg-alt) 100%);
  position: relative;
  overflow: hidden;
}

[data-theme="light"] .hero {
  background: linear-gradient(135deg, var(--color-bg) 0%, #e8eaf0 50%, var(--color-bg-alt) 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 150%;
  background: radial-gradient(circle, rgba(0, 212, 160, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: var(--font-weight-extrabold);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.trust-signals {
  border-top: 1px solid var(--color-border);
}

.trust-item {
  padding: 1.5rem 0;
}

.trust-number {
  font-size: 2rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.trust-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
}

/* ---------- SECTIONS ---------- */
.section {
  padding: var(--section-spacing) 0;
  position: relative;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* ---------- PROBLEM / SOLUTION ---------- */
.problem-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2rem;
  transition: var(--transition);
}

.problem-card:hover {
  border-color: var(--color-border-strong);
  background-color: var(--color-bg-card-hover);
  transform: translateY(-4px);
}

.problem-icon {
  font-size: 1.5rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-accent);
  opacity: 0.8;
}

.solution-box {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

/* ---------- SERVICES ---------- */
.service-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2rem;
  transition: var(--transition);
}

.service-card:hover {
  border-color: var(--color-border-strong);
  background-color: var(--color-bg-card-hover);
  transform: translateY(-4px);
}

.service-icon {
  color: var(--color-accent);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-icon svg {
  width: 100%;
  height: 100%;
}

/* ---------- DIFFERENTIATORS ---------- */
.diff-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 1.75rem;
  transition: var(--transition);
}

.diff-card:hover {
  border-color: var(--color-border-strong);
  background-color: var(--color-bg-card-hover);
}

.diff-number {
  font-size: 1.25rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-accent);
  opacity: 0.7;
  line-height: 1.2;
  min-width: 2rem;
}

/* ---------- SOCIAL PROOF / STATS ---------- */
.stat-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--color-accent);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ---------- CASE STUDIES ---------- */
.case-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 1.75rem;
  transition: var(--transition);
}

.case-card:hover {
  border-color: var(--color-border-strong);
  background-color: var(--color-bg-card-hover);
  transform: translateY(-4px);
}

.case-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  background-color: rgba(0, 212, 160, 0.1);
  padding: 0.25rem 0.75rem;
  border-radius: 2rem;
}

/* ---------- PROCESS ---------- */
.process-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.process-card:hover {
  border-color: var(--color-border-strong);
  background-color: var(--color-bg-card-hover);
}

.process-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
  opacity: 0;
  transition: var(--transition);
}

.process-card:hover::after {
  opacity: 1;
}

.process-step {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

/* ---------- TESTIMONIALS ---------- */
.testimonial-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2rem;
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: var(--color-border-strong);
  background-color: var(--color-bg-card-hover);
}

.testimonial-stars {
  color: #f0b429;
  font-size: 1.25rem;
  letter-spacing: 0.15em;
}

.testimonial-card blockquote {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  border-left: 2px solid var(--color-accent);
  padding-left: 1rem;
  margin: 0;
  font-style: italic;
}

.testimonial-author strong {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.testimonial-author span {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ---------- CONTACT ---------- */
.contact-box {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.form-label {
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.form-control {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--border-radius);
  color: var(--color-text);
  padding: 0.875rem 1rem;
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-control:focus {
  background-color: var(--color-bg);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 160, 0.15);
  color: var(--color-text);
}

.form-control::placeholder {
  color: var(--color-text-muted);
  opacity: 0.6;
}

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

.invalid-feedback {
  color: #ff6b6b;
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

#formResult {
  font-weight: var(--font-weight-medium);
  min-height: 1.5rem;
}

#formResult.success {
  color: var(--color-accent);
}

#formResult.error {
  color: #ff6b6b;
}

/* ---------- FOOTER ---------- */
.footer {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}

.footer-brand {
  font-size: 1.25rem;
  color: var(--color-text);
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--color-text);
}

/* ---------- SCROLL ANIMATIONS ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- ACCESSIBILITY ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 767.98px) {
  :root {
    --section-spacing: 3rem;
  }

  .hero {
    padding-top: 5rem;
    min-height: auto;
    padding-bottom: 3rem;
  }

  .trust-item {
    padding: 1rem 0;
  }

  .trust-number {
    font-size: 1.5rem;
  }

  .stat-number {
    font-size: 1.75rem;
  }

  .navbar-nav {
    padding-top: 1rem;
  }

  .navbar-nav .nav-link.btn-primary {
    margin-top: 0.5rem;
    margin-left: 0 !important;
  }
}

@media (max-width: 575.98px) {
  .hero-title {
    font-size: 2rem;
  }

  .btn-lg {
    width: 100%;
    margin-bottom: 0.5rem;
  }
}

/* ---------- SCROLLBAR ---------- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ---------- PRICING ---------- */
.pricing-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2.5rem 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.pricing-card:hover {
  border-color: var(--color-border-strong);
  background-color: var(--color-bg-card-hover);
  transform: translateY(-4px);
}

.pricing-card.featured {
  border-color: var(--color-accent);
  box-shadow: 0 10px 30px -10px rgba(0, 212, 160, 0.15);
}

.pricing-card.featured::before {
  content: "RECOMMENDED";
  position: absolute;
  top: 15px;
  right: -30px;
  background: var(--color-accent);
  color: #0a0e1a;
  font-size: 0.65rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: 1px;
  padding: 4px 30px;
  transform: rotate(45deg);
}

.price-title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: 0.5rem;
}

.price-rate {
  font-size: 2.25rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.price-unit {
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
}

.price-features {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 2rem 0;
  text-align: left;
}

.price-features li {
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  position: relative;
  padding-left: 1.5rem;
  color: var(--color-text);
}

.price-features li::before {
  content: "✓";
  color: var(--color-accent);
  position: absolute;
  left: 0;
  font-weight: var(--font-weight-bold);
}