/* base.css — design tokens & global resets for Protonox website */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Ubuntu, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;

  --color-background: #05080f;
  --color-surface: rgba(13, 19, 33, 0.72);
  --color-surface-strong: rgba(18, 25, 41, 0.88);
  --color-border: rgba(255, 255, 255, 0.12);
  --color-border-strong: rgba(255, 255, 255, 0.22);
  --color-text: #eaf2ff;
  --color-text-strong: #f8fbff;
  --color-text-muted: #a3afc7;
  --color-accent: #5f8bff;
  --color-accent-strong: #4066ff;
  --color-success: #19d3a4;
  --color-warning: #f1b24a;
  --color-error: #ff717c;
  --color-surface-light: rgba(255, 255, 255, 0.75);
  --color-text-dark: #1a1a1a;
  --color-link: #8fb4ff;
  --color-link-hover: #bfd0ff;

  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 16px 40px rgba(0, 0, 0, 0.32);
  --shadow-sm: 0 8px 20px rgba(0, 0, 0, 0.24);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --glass-effect: saturate(160%) blur(16px);

  --layout-max-width: min(1200px, 92vw);
  --layout-padding: clamp(20px, 4vw, 48px);
}

body.dark-mode {
  --color-link: #8fb4ff;
  --color-link-hover: #bfd0ff;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: radial-gradient(1200px 800px at 65% -10%, rgba(47, 76, 158, 0.55) 0%, var(--color-background) 58%) fixed;
  background-color: var(--color-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.page-shell {
  max-width: var(--layout-max-width);
  margin: 0 auto;
  padding: 0 var(--layout-padding);
}

.platform-mobile .page-shell {
  max-width: 100vw;
  padding: 0 1.25rem;
}

.platform-desktop .navbar,
.platform-desktop header nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-background);
  backdrop-filter: blur(10px);
}

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 15, 0.92);
  backdrop-filter: blur(16px);
  transform: translateX(100%);
  opacity: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
}

.nav-overlay.is-open {
  transform: translateX(0);
  opacity: 1;
}

.platform-mobile [data-menu-toggle] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.05);
}

.card-grid,
.cards-grid,
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

@media (max-width: 768px) {
  .card-grid,
  .cards-grid,
  .content-grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }

  .card-grid > *,
  .cards-grid > *,
  .content-grid > * {
    min-width: 78vw;
    scroll-snap-align: start;
  }

  .platform-mobile .login-viewport,
  .platform-mobile .auth-viewport {
    max-width: 520px;
    margin: 0 auto;
  }
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.3rem;
  min-height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
}

.lang-toggle button {
  border: none;
  background: transparent;
  color: inherit;
  font-weight: 600;
  font-size: 0.85rem;
  line-height: 1.2;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.lang-toggle button:hover,
.lang-toggle button:focus-visible {
  background: rgba(255, 255, 255, 0.22);
  outline: none;
}

.lang-toggle button.is-active {
  background: var(--color-accent);
  color: #0b1120;
}

body.light-mode .lang-toggle {
  background: rgba(15, 23, 42, 0.08);
  border-color: rgba(15, 23, 42, 0.16);
}

body.light-mode .lang-toggle button.is-active {
  background: var(--color-accent-strong);
  color: #ffffff;
}

body.light-mode {
  background: linear-gradient(160deg, #f4f8ff 0%, #e2ecff 40%, #ffffff 100%);
  color: var(--color-text);
  --color-text: #333333;
  --color-text-strong: #000000;
  --color-text-muted: #666666;
  --color-link: #0056b3;
  --color-link-hover: #003a7a;
  --color-error: #d32f2f;
  --color-border: rgba(15, 23, 42, 0.08);
  --color-border-strong: rgba(15, 23, 42, 0.18);
  --color-surface: rgba(255, 255, 255, 0.88);
  --color-surface-strong: rgba(241, 246, 255, 0.92);
  --color-surface-light: rgba(255, 255, 255, 0.94);
}

body.light-mode h1,
body.light-mode h2,
body.light-mode h3,
body.light-mode h4,
body.light-mode h5,
body.light-mode h6 {
  color: var(--color-text-strong);
}

body.light-mode p,
body.light-mode label,
body.light-mode li,
body.light-mode span,
body.light-mode td,
body.light-mode th {
  color: var(--color-text);
}

body.light-mode .text-muted,
body.light-mode .muted {
  color: var(--color-text-muted);
}

body.light-mode a {
  color: var(--color-link);
}

body.light-mode a:hover {
  color: var(--color-link-hover);
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button, input, textarea, select {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: -999px;
  background: var(--color-accent);
  color: var(--color-text-strong);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 4000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

#protonoxNotificationTray {
  position: fixed;
  inset: auto 1.25rem 1.25rem auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: min(320px, calc(100vw - 2rem));
  z-index: 9999;
  pointer-events: none;
}

.notification-card {
  pointer-events: auto;
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow-md);
  backdrop-filter: var(--glass-effect);
  border: 1px solid var(--color-border);
  animation: protonoxNotificationSlide 0.28s ease-out;
}

.notification-card h4 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 600;
}

.notification-card p {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.notification-card__actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  align-items: center;
}

.notification-card__actions button {
  border: none;
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.notification-card__cta {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.notification-card__cta:hover,
.notification-card__cta:focus {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.notification-card__dismiss {
  background: transparent;
  color: var(--color-text-muted);
}

.notification-card__dismiss:hover,
.notification-card__dismiss:focus {
  color: var(--color-text);
}

@keyframes protonoxNotificationSlide {
  0% {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.container-shell {
  width: var(--layout-max-width);
  margin: 0 auto;
  padding: var(--layout-padding);
}

.surface-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  backdrop-filter: var(--glass-effect);
  -webkit-backdrop-filter: var(--glass-effect);
}

.surface-card.light {
  background: var(--color-surface-light);
  color: var(--color-text-dark);
}

.text-muted { color: var(--color-text-muted); }
.text-strong { color: var(--color-text-strong); }
.text-accent { color: var(--color-accent); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.85rem;
  background: rgba(95, 139, 255, 0.18);
  color: #dbe6ff;
  border: 1px solid rgba(95, 139, 255, 0.32);
}

.button {
  appearance: none;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  padding: 0.75rem 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.button:active {
  transform: scale(0.98);
}

.button-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-strong) 100%);
  color: var(--color-text-strong);
  box-shadow: var(--shadow-sm);
}

.button-primary:hover {
  box-shadow: var(--shadow-md);
}

.button-outline {
  background: transparent;
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.button-outline:hover {
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.06);
}

.button-ghost {
  background: transparent;
  color: var(--color-text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
  font-weight: 600;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: scale(0.98);
}

.btn.primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-strong) 100%);
  color: var(--color-text-strong);
  box-shadow: var(--shadow-sm);
}

.btn.primary:hover {
  box-shadow: var(--shadow-md);
}

.btn.link {
  background: transparent;
  border: none;
  color: var(--color-accent);
  padding: 0.4rem 0.2rem;
  justify-content: flex-start;
}

.btn.full {
  width: 100%;
}

.section-block {
  margin: clamp(24px, 4vw, 36px) 0;
  padding: clamp(24px, 4vw, 36px);
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.section-header {
  display: grid;
  gap: clamp(8px, 1.8vw, 16px);
}

.text-center {
  text-align: center;
}

.text-center .cta-row,
.cta-row.center {
  justify-content: center;
  text-align: center;
}

.section-header h2,
.section-header h3,
.section-header h4 {
  margin: 0;
}

.benefits-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.benefits-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  position: relative;
  padding-left: 1.4rem;
}

.benefits-list li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-size: 0.95rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.cta-column {
  display: grid;
  gap: 0.75rem;
}

.steps-list {
  counter-reset: steps;
  list-style: none;
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
}

.steps-list li {
  position: relative;
  padding-left: 2.25rem;
  font-weight: 500;
}

.steps-list li::before {
  counter-increment: steps;
  content: counter(steps);
  position: absolute;
  left: 0;
  top: 0;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: rgba(95, 139, 255, 0.18);
  color: var(--color-text-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.tools-grid,
.plans-grid,
.testimonials-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.tool-card,
.plan-card,
.testimonial {
  display: grid;
  gap: 0.75rem;
}

.result-card {
  padding: clamp(18px, 3vw, 26px);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
}

.result-card h4 {
  margin: 0;
  font-size: clamp(1.4rem, 2.8vw, 1.8rem);
}

.price {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
  margin: 0;
}

.tagline {
  margin: 0;
  font-weight: 500;
  color: var(--color-accent);
}

.plan-card {
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.plan-card.highlighted {
  border-color: rgba(255, 221, 128, 0.45);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.testimonials-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.testimonial blockquote {
  margin: 0;
  font-style: italic;
  line-height: 1.5;
}

.testimonial figcaption {
  font-weight: 600;
  color: var(--color-accent);
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

.faq-list details {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  background: rgba(255, 255, 255, 0.04);
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-list p {
  margin-top: 0.6rem;
  color: var(--color-text-muted);
}

.grid-auto-fit {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.shadow-ring {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.1), 0 12px 40px rgba(0, 0, 0, 0.28);
}

@media (max-width: 720px) {
  body {
    font-size: 0.98rem;
  }
}