/* theme colors and styles
   dark mode is the default
   light mode gets added when user picks it */

:root {
  transition: background-color 0.3s ease, color 0.3s ease;
}

* {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* light mode colors and variables */
html.light-mode {
  color-scheme: light;
  --bg: #f7fafc;
  --bg-soft: #f1f5f9;
  --surface: rgba(2, 6, 23, 0.06);
  --card: rgba(2, 6, 23, 0.08);
  --text: #0b1220;
  --muted: #4b5a73;
  --primaryA: #6ee7b7;
  --primaryB: #60a5fa;
  --accent: #c084fc;
  --radius: 16px;
  --shadow: 0 20px 60px rgba(2, 6, 23, 0.12);
  --border: rgba(2, 6, 23, 0.12);
}

/* dark mode - this is default */
html,
html.dark-mode {
  color-scheme: dark;
  --bg: #0a0f1e;
  --bg-soft: #0d1426;
  --surface: rgba(255, 255, 250, 0.06);
  --card: rgba(255, 255, 250, 0.08);
  --text: #e8eef9;
  --muted: #9fb0c9;
  --primaryA: #6ee7b7;
  --primaryB: #60a5fa;
  --accent: #c084fc;
  --radius: 16px;
  --shadow: 0 20px 70px rgba(2, 6, 23, 0.35);
  --border: rgba(255, 255, 255, 0.12);
}

/* light mode body background */
html.light-mode body {
  background: linear-gradient(
    180deg,
    #f7fafc 0%,
    #f1f5f9 60%,
    #f7fafc 100%
  );
  color: var(--text);
}

/* dark mode body - with gradients */
html.dark-mode body,
html body {
  background: radial-gradient(1200px 600px at 20% -10%, rgba(110, 231, 183, 0.12), transparent 60%),
    radial-gradient(900px 500px at 110% 10%, rgba(96, 165, 250, 0.14), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 60%, var(--bg) 100%);
  color: var(--text);
}

/* topbar in light mode */
html.light-mode .topbar {
  background: linear-gradient(0deg, transparent, rgba(241, 245, 249, 0.6));
  border-bottom: 1px solid rgba(2, 6, 23, 0.08);
}

html.light-mode .topbar.scrolled {
  box-shadow: 0 4px 12px rgba(2, 6, 23, 0.1);
}

/* topbar in dark mode */
html.dark-mode .topbar,
html .topbar {
  background: linear-gradient(0deg, transparent, rgba(0, 0, 0, 0.25));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

html.dark-mode .topbar.scrolled,
html .topbar.scrolled {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

/* ===== LIGHT MODE BUTTONS ===== */
html.light-mode .btn-ghost {
  background: transparent;
  outline: 1px solid rgba(2, 6, 23, 0.12);
  color: var(--muted);
}

html.light-mode .btn-outline {
  background: transparent;
  outline: 1px solid rgba(2, 6, 23, 0.15);
  color: var(--text);
}

html.light-mode .btn-outline:hover {
  color: #0b1220;
  box-shadow: 0 0 15px rgba(82, 238, 238, 0.3);
}

/* buttons in dark mode */
html.dark-mode .btn-ghost,
html .btn-ghost {
  background: transparent;
  outline: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

html.dark-mode .btn-outline,
html .btn-outline {
  background: transparent;
  outline: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text);
}

html.dark-mode .btn-outline:hover,
html .btn-outline:hover {
  color: #e0e0e0;
  box-shadow: 0 0 15px rgba(82, 238, 238, 0.774);
}

/* form inputs in light mode */
html.light-mode .form input,
html.light-mode .form select,
html.light-mode .form textarea {
  border: 1px solid rgba(2, 6, 23, 0.15);
  background: rgba(2, 6, 23, 0.04);
  color: var(--text);
}

html.light-mode .form input:focus,
html.light-mode .form select:focus,
html.light-mode .form textarea:focus {
  border-color: #60a5fa;
  box-shadow: 0 0 8px rgba(96, 165, 250, 0.2);
}

/* form inputs dark mode */
html.dark-mode .form input,
html.dark-mode .form select,
html.dark-mode .form textarea,
html .form input,
html .form select,
html .form textarea {
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

html.dark-mode .form input:focus,
html.dark-mode .form select:focus,
html.dark-mode .form textarea:focus,
html .form input:focus,
html .form select:focus,
html .form textarea:focus {
  border-color: #c084fc;
  box-shadow: 0 0 8px rgba(192, 132, 252, 0.4);
}

/* cards and surfaces - light mode */
html.light-mode .card,
html.light-mode .feature-card,
html.light-mode .faq-item,
html.light-mode .step,
html.light-mode blockquote,
html.light-mode .testi-card {
  background: rgba(2, 6, 23, 0.05);
  border: 1px solid rgba(2, 6, 23, 0.1);
}

html.light-mode .faq-item[open] {
  outline: 2px solid rgba(110, 231, 183, 0.15);
}

html.light-mode .testi-card {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

/* cards and surfaces - dark mode */
html.dark-mode .card,
html.dark-mode .feature-card,
html.dark-mode .faq-item,
html.dark-mode .step,
html.dark-mode blockquote,
html.dark-mode .testi-card,
html .card,
html .feature-card,
html .faq-item,
html .step,
html blockquote,
html .testi-card {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

html.dark-mode .faq-item[open],
html .faq-item[open] {
  outline: 2px solid rgba(110, 231, 183, 0.25);
}

html.dark-mode .testi-card,
html .testi-card {
  background: var(--card);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
}

/* cta section - light mode */
html.light-mode .cta {
  background: linear-gradient(135deg, rgba(110, 231, 183, 0.08), rgba(96, 165, 250, 0.08));
  border: 1px solid rgba(110, 231, 183, 0.2);
  box-shadow: 0 20px 60px rgba(2, 6, 23, 0.08);
}

/* cta section - dark mode */
html.dark-mode .cta,
html .cta {
  background: linear-gradient(135deg, rgba(110, 231, 183, 0.14), rgba(96, 165, 250, 0.18));
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: var(--shadow);
}

/* footer light mode */
html.light-mode footer {
  border-top: 1px solid rgba(2, 6, 23, 0.08);
  background: rgba(2, 6, 23, 0.02);
}

/* footer dark mode */
html.dark-mode footer,
html footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.2);
}

/* testimonials - light mode */
html.light-mode .testimonials {
  background-color: #f9f9f9;
}

html.light-mode .testimonials .section-title {
  color: #111;
}

html.light-mode .testimonials .muted {
  color: #666;
}

html.light-mode .testi-card {
  background-color: #fff;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
}

html.light-mode .testi-card:hover {
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

html.light-mode .user-img {
  border-color: #007BFF;
}

html.light-mode .user-name {
  color: #222;
}

html.light-mode .user-loc {
  color: #777;
}

html.light-mode .testi-text {
  color: #444;
}

/* testimonials - dark mode */
html.dark-mode .testimonials,
html .testimonials {
  background-color: #1a1a1a;
}

html.dark-mode .testimonials .section-title,
html .testimonials .section-title {
  color: #f9f9f9;
}

html.dark-mode .testimonials .muted,
html .testimonials .muted {
  color: #ccc;
}

html.dark-mode .testi-card,
html .testi-card {
  background-color: #2c2c2c;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.6);
}

html.dark-mode .testi-card:hover,
html .testi-card:hover {
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.8);
}

html.dark-mode .user-img,
html .user-img {
  border-color: #4dabf7;
}

html.dark-mode .user-name,
html .user-name {
  color: #f0f0f0;
}

html.dark-mode .user-loc,
html .user-loc {
  color: #aaa;
}

html.dark-mode .testi-text,
html .testi-text {
  color: #e0e0e0;
}

/* navigation links - light mode */
html.light-mode nav.primary a {
  color: var(--muted);
}

html.light-mode nav.primary a:hover {
  color: #0b1220;
  box-shadow: 0 0 15px rgba(96, 165, 250, 0.3);
}

html.light-mode nav.primary a.active-link {
  border: 1.5px solid rgba(2, 6, 23, 0.3);
  background: rgba(2, 6, 23, 0.05);
  color: #0b1220;
}

/* navigation links - dark mode */
html.dark-mode nav.primary a,
html nav.primary a {
  color: var(--muted);
}

html.dark-mode nav.primary a:hover,
html nav.primary a:hover {
  color: #e0e0e0;
  box-shadow: 0 0 15px rgba(172, 255, 255, 0.774);
}

html.dark-mode nav.primary a.active-link,
html nav.primary a.active-link {
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}

/* mobile nav - light mode */
html.light-mode #mobnav a {
  color: var(--muted);
}

html.light-mode #mobnav a:hover {
  color: #0b1220;
}

html.light-mode #mobnav a.active-link {
  border: 1.5px solid rgba(2, 6, 23, 0.3);
  background: rgba(2, 6, 23, 0.05);
  color: #0b1220;
}

/* mobile nav - dark mode */
html.dark-mode #mobnav a,
html #mobnav a {
  color: var(--muted);
}

html.dark-mode #mobnav a:hover,
html #mobnav a:hover {
  color: #fff;
}

html.dark-mode #mobnav a.active-link,
html #mobnav a.active-link {
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}

/* beta section - light */
html.light-mode .beta {
  background: rgba(2, 6, 23, 0.05);
}

html.light-mode .beta input {
  background: rgba(2, 6, 23, 0.03);
  border: 1px solid rgba(2, 6, 23, 0.15);
  color: var(--text);
}

/* beta section - dark */
html.dark-mode .beta,
html .beta {
  background: var(--surface);
}

html.dark-mode .beta input,
html .beta input {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text);
}

/* back to top button - light */
html.light-mode #backToTop {
  background: linear-gradient(135deg, #6ee7b7, #60a5fa);
  color: #04263b;
  box-shadow: 0 6px 20px rgba(110, 231, 183, 0.2);
}

html.light-mode #backToTop:hover {
  box-shadow: 0 8px 25px rgba(110, 231, 183, 0.3);
}

/* back to top - dark mode */
html.dark-mode #backToTop,
html #backToTop {
  background: linear-gradient(135deg, var(--primaryA), var(--primaryB));
  color: rgba(255, 255, 255, 0.915);
  box-shadow: 0 6px 20px rgba(37, 117, 252, 0.4);
}

html.dark-mode #backToTop:hover,
html #backToTop:hover {
  box-shadow: 0 8px 25px rgba(37, 117, 252, 0.6);
}

/* auth page styling - light mode */
html.light-mode body {
  background: linear-gradient(160deg, rgba(15, 118, 110, 0.08), rgba(37, 99, 235, 0.08), rgba(124, 58, 237, 0.08));
}

html.light-mode .auth-container {
  background: #ffffff;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.1);
}

html.light-mode .auth-right {
  background: linear-gradient(135deg, #f0f4f8, #e8eef9);
  color: #0b1220;
}

html.light-mode .auth-card h1 {
  background: linear-gradient(90deg, #2d9d78, #4f46e5, #7c3aed);
  -webkit-text-fill-color: transparent;
}

html.light-mode .auth-card .sub {
  color: #4b5a73;
}

html.light-mode .tab {
  color: #4b5a73;
}

html.light-mode .tab.active {
  background: linear-gradient(135deg, #6ee7b7, #60a5fa);
  color: white;
}

html.light-mode .form input,
html.light-mode .form select,
html.light-mode .form textarea {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(2, 6, 23, 0.15);
  color: #0b1220;
}

html.light-mode .btn-ghost {
  color: #0b1220;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(2, 6, 23, 0.2);
}

/* auth page styling - dark mode */
html.dark-mode body,
html body {
  background: linear-gradient(160deg, rgba(15, 118, 110, 0.15), rgba(37, 99, 235, 0.15), rgba(124, 58, 237, 0.15));
}

html.dark-mode .auth-container,
html .auth-container {
  background: #1a1a1a;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

html.dark-mode .auth-right,
html .auth-right {
  background: linear-gradient(135deg, #0a2540, #0f3d66);
  color: white;
}

html.dark-mode .auth-card h1,
html .auth-card h1 {
  background: linear-gradient(90deg, #6ee7b7, #c084fc, #60a5fa);
  -webkit-text-fill-color: transparent;
}

html.dark-mode .auth-card .sub,
html .auth-card .sub {
  color: #dac0c0;
}

html.dark-mode .tab,
html .tab {
  color: #dac0c0;
}

html.dark-mode .tab.active,
html .tab.active {
  background: linear-gradient(135deg, var(--primaryA), var(--primaryB));
  color: white;
}

html.dark-mode .form input,
html.dark-mode .form select,
html.dark-mode .form textarea,
html .form input,
html .form select,
html .form textarea {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: white;
}

html.dark-mode .btn-ghost,
html .btn-ghost {
  color: white;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* profile page specific */
html.light-mode .section {
  background: #f7fafc;
  color: #0b1220;
}

html.dark-mode .section,
html .section {
  background: #0a0f1e;
  color: #e8eef9;
}

/* button transitions when switching theme */
#themeToggle,
#themeToggleMobile {
  transition: all 0.3s ease;
}

#themeToggle:hover,
#themeToggleMobile:hover {
  transform: scale(1.05);
}

/* smooth scrolling */
html {
  scroll-behavior: smooth;
}