@layer reset, base, utilities, components;

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

  * {
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
    text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
  }

  body {
    min-height: 100vh;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
  }

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

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

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

  ul, ol {
    list-style: none;
  }
}

:root {
  --color-bg: #ffffff;
  --color-surface: #f8fafc;
  --color-surface-elevated: #ffffff;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-border-subtle: #e2e8f0;
  --color-border-strong: #cbd5f5;
  --color-primary: #2563eb;
  --color-primary-soft: #dbeafe;
  --color-primary-strong: #1d4ed8;
  --color-primary-gradient-start: #2563eb;
  --color-primary-gradient-end: #0ea5e9;
  --color-gold: #fbbf24;
  --color-gold-soft: #fef3c7;
  --color-success: #16a34a;
  --color-warning: #f59e0b;
  --color-danger: #dc2626;
  --color-neutral-50: #f9fafb;
  --color-neutral-100: #f3f4f6;
  --color-neutral-200: #e5e7eb;
  --color-neutral-300: #d1d5db;
  --color-neutral-400: #9ca3af;
  --color-neutral-500: #6b7280;
  --color-neutral-600: #4b5563;
  --color-neutral-700: #374151;
  --color-overlay: rgba(15, 23, 42, 0.75);

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.0625rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  --line-height-tight: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 1.75rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 999px;

  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 6px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 18px 40px rgba(15, 23, 42, 0.18);

  --transition-fast: 120ms ease-out;
  --transition-base: 180ms ease-out;
  --transition-slow: 260ms ease;
  --transition-bezier-soft: cubic-bezier(0.19, 1, 0.22, 1);

  --container-max-width: 1120px;
  --container-padding-x: 1.25rem;

  --focus-ring-color: rgba(37, 99, 235, 0.45);
  --focus-ring-width: 2px;
  --focus-ring-offset: 2px;
}

@media (min-width: 768px) {
  :root {
    --font-size-base: 1rem;
    --font-size-xl: 1.375rem;
    --font-size-2xl: 1.75rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.25rem;
    --container-padding-x: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

@layer base {
  body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    background-color: var(--color-bg);
    color: var(--color-text);
  }

  main {
    min-height: 60vh;
  }

  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
  }

  h1 {
    font-size: var(--font-size-3xl);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-4);
  }

  h2 {
    font-size: var(--font-size-2xl);
    line-height: var(--line-height-snug);
    margin-bottom: var(--space-3);
  }

  h3 {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-snug);
    margin-bottom: var(--space-2);
  }

  h4 {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-normal);
    margin-bottom: var(--space-2);
  }

  p {
    margin-bottom: var(--space-3);
    color: var(--color-text-muted);
  }

  p + p {
    margin-top: calc(var(--space-2) * -1);
  }

  strong {
    font-weight: 600;
  }

  a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-base), opacity var(--transition-base);
  }

  a:hover {
    color: var(--color-primary-strong);
  }

  a:focus-visible {
    outline: var(--focus-ring-width) solid var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
  }

  button {
    border: none;
    background: none;
    cursor: pointer;
  }

  button:disabled,
  [aria-disabled="true"] {
    cursor: not-allowed;
  }
}

@layer utilities {
  .container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    max-width: var(--container-max-width);
    padding-left: var(--container-padding-x);
    padding-right: var(--container-padding-x);
  }

  .flex {
    display: flex;
  }

  .inline-flex {
    display: inline-flex;
  }

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

  .flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .flex-column {
    display: flex;
    flex-direction: column;
  }

  .grid {
    display: grid;
  }

  .grid-auto-fit {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4);
  }

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

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

  .mt-4 {
    margin-top: var(--space-4);
  }

  .mb-4 {
    margin-bottom: var(--space-4);
  }

  .py-section {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  @media (min-width: 768px) {
    .py-section {
      padding-top: var(--space-12);
      padding-bottom: var(--space-12);
    }
  }

  .badge-gold {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.125rem 0.625rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #92400e;
    background: linear-gradient(120deg, #fef3c7, #fde68a);
    box-shadow: 0 0 0 1px rgba(234, 179, 8, 0.18);
  }

  .pill-soft {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border-subtle);
    background-color: rgba(15, 23, 42, 0.02);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
  }
}

@layer components {
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.4rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    line-height: 1;
    border: 1px solid transparent;
    transition: background-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast), border-color var(--transition-base), opacity var(--transition-base);
    white-space: nowrap;
  }

  .btn-primary {
    color: #0b1120;
    background-image: linear-gradient(120deg, #facc15, #f97316);
    box-shadow: 0 12px 25px rgba(234, 179, 8, 0.35);
    border-color: rgba(217, 119, 6, 0.6);
  }

  .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 32px rgba(234, 179, 8, 0.5);
    filter: brightness(1.02);
  }

  .btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 8px 18px rgba(234, 179, 8, 0.35);
  }

  .btn-secondary {
    color: var(--color-text);
    background: linear-gradient(120deg, var(--color-primary-soft), #eff6ff);
    border-color: rgba(37, 99, 235, 0.18);
    box-shadow: var(--shadow-xs);
  }

  .btn-secondary:hover {
    background: linear-gradient(120deg, #dbeafe, #e0f2fe);
    box-shadow: var(--shadow-sm);
  }

  .btn-ghost {
    color: var(--color-primary);
    background-color: transparent;
    border-color: transparent;
  }

  .btn-ghost:hover {
    background-color: rgba(37, 99, 235, 0.08);
  }

  .btn:disabled,
  .btn[aria-disabled="true"] {
    opacity: 0.55;
    pointer-events: none;
    box-shadow: none;
  }

  .btn:focus-visible {
    outline: var(--focus-ring-width) solid var(--focus-ring-color);
    outline-offset: 3px;
  }

  .input,
  textarea,
  select {
    width: 100%;
    padding: 0.65rem 0.8rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-subtle);
    background-color: var(--color-surface);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
  }

  .input::placeholder,
  textarea::placeholder {
    color: var(--color-text-muted);
    opacity: 0.8;
  }

  .input:focus-visible,
  textarea:focus-visible,
  select:focus-visible {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px var(--color-primary-soft), 0 0 0 4px rgba(37, 99, 235, 0.18);
    background-color: #ffffff;
  }

  .input-error {
    border-color: var(--color-danger);
  }

  .input-error:focus-visible {
    box-shadow: 0 0 0 1px rgba(248, 113, 113, 0.7), 0 0 0 4px rgba(248, 113, 113, 0.28);
  }

  .card {
    position: relative;
    border-radius: var(--radius-xl);
    background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.06), transparent 55%), radial-gradient(circle at bottom right, rgba(250, 204, 21, 0.08), transparent 55%), var(--color-surface-elevated);
    border: 1px solid rgba(148, 163, 184, 0.16);
    padding: var(--space-5);
    box-shadow: var(--shadow-md);
    overflow: hidden;
  }

  .card-soft {
    border-radius: var(--radius-lg);
    background-color: var(--color-surface);
    border: 1px solid rgba(148, 163, 184, 0.18);
    padding: var(--space-4);
    box-shadow: var(--shadow-sm);
  }

  .card-hover {
    transition: transform var(--transition-bezier-soft), box-shadow var(--transition-base), border-color var(--transition-base);
  }

  .card-hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(59, 130, 246, 0.35);
  }

  .hero-section {
    position: relative;
    padding-top: var(--space-10);
    padding-bottom: var(--space-10);
    background: radial-gradient(circle at top, rgba(59, 130, 246, 0.12), transparent 60%), radial-gradient(circle at bottom, rgba(250, 204, 21, 0.12), transparent 60%), linear-gradient(to bottom, #eff6ff, #ffffff);
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .hero-section {
      padding-top: var(--space-16);
      padding-bottom: var(--space-16);
    }

    h1 {
      font-size: var(--font-size-4xl);
    }
  }

  .hero-title-highlight {
    background: linear-gradient(120deg, #1d4ed8, #0ea5e9);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .section-heading-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--color-primary-strong);
    margin-bottom: var(--space-2);
  }

  .sticky-cta {
    position: sticky;
    bottom: 0;
    z-index: 40;
    backdrop-filter: blur(18px);
    background: linear-gradient(to top, rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.5));
    padding: 0.55rem 0.9rem;
  }

  .sticky-cta-inner {
    max-width: 480px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    color: #e5e7eb;
  }

  .sticky-cta-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    opacity: 0.85;
  }

  .sticky-cta-desc {
    font-size: var(--font-size-xs);
    color: #cbd5f5;
  }

  .sticky-cta .btn-primary {
    padding-inline: 1.3rem;
    font-size: var(--font-size-xs);
    white-space: nowrap;
  }

  @media (min-width: 768px) {
    .sticky-cta {
      display: none;
    }
  }

  :focus-visible {
    outline: var(--focus-ring-width) solid var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
  }

  [data-focus-visible-added] {
    outline: var(--focus-ring-width) solid var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
  }
}