@layer reset, tokens, base, components, sections, utilities;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  * { margin: 0; }
  html { scroll-behavior: smooth; }
  img, picture, video, canvas, svg { display: block; max-width: 100%; }
  input, button, textarea, select { font: inherit; }
  p, h1, h2, h3, h4, h5, h6 { overflow-wrap: break-word; }
}

@layer tokens {
  :root {
    /* Colours — Provocateur */
    --color-bg: #1C1C1E;
    --color-surface: #2C2C2E;
    --color-primary: #F5F5F5;
    --color-accent: #FF6B35;
    --color-text: #F5F5F5;
    --color-text-secondary: #8E8E93;
    --color-border: rgba(245, 245, 245, 0.15);

    /* Typography */
    --font-heading: 'Sora', sans-serif;
    --font-body: 'DM Sans', sans-serif;

    /* Responsive type scale */
    --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1rem + 1vw, 1.75rem);
    --text-2xl: clamp(1.5rem, 1rem + 2vw, 2.5rem);
    --text-3xl: clamp(2rem, 1rem + 3vw, 3.5rem);
    --text-hero: clamp(2.5rem, 1.5rem + 4vw, 4.5rem);

    /* Spacing scale */
    --space-xs: clamp(0.5rem, 0.4rem + 0.5vw, 0.75rem);
    --space-sm: clamp(0.75rem, 0.6rem + 0.75vw, 1.25rem);
    --space-md: clamp(1.5rem, 1rem + 2vw, 2.5rem);
    --space-lg: clamp(2.5rem, 1.5rem + 4vw, 4.5rem);
    --space-xl: clamp(4rem, 2.5rem + 6vw, 7rem);
    --space-section: clamp(4rem, 3rem + 5vw, 8rem);

    /* Components */
    --radius: 0.75rem;
    --radius-sm: 0.375rem;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --duration: 0.2s;

    /* Layout */
    --container: min(1200px, 90vw);
    --container-narrow: min(800px, 90vw);
  }
}

@layer base {
  body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
  }

  :is(h1, h2, h3, h4) {
    font-family: var(--font-heading);
    line-height: 1.2;
    color: var(--color-primary);
  }

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

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

  ::selection {
    background: var(--color-accent);
    color: white;
  }
}

@layer components {
  .btn-primary {
    display: inline-block;
    background: var(--color-accent);
    color: #fff;
    padding: 0.875rem 2rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-family: var(--font-body);
    font-size: var(--text-base);
    border: none;
    cursor: pointer;
    transition: background var(--duration) var(--ease),
                transform var(--duration) var(--ease);
  }

  .btn-primary:hover {
    background: color-mix(in srgb, var(--color-accent), black 15%);
    transform: translateY(-1px);
    text-decoration: none;
  }

  .btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--color-text);
    padding: 0.875rem 2rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    font-weight: 600;
    font-size: var(--text-base);
    cursor: pointer;
    transition: border-color var(--duration) var(--ease);
  }

  .btn-secondary:hover {
    border-color: var(--color-accent);
    text-decoration: none;
  }

  .card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-md);
    transition: border-color var(--duration) var(--ease),
                transform var(--duration) var(--ease);
  }

  .card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
  }

  .section-label {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
  }

  .check-list, .cross-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .check-list li::before {
    content: '✓';
    display: inline-block;
    width: 1.5rem;
    font-weight: 700;
    color: #34C759;
  }

  .cross-list li::before {
    content: '✗';
    display: inline-block;
    width: 1.5rem;
    font-weight: 700;
    color: var(--color-text-secondary);
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
  }

  .form-group label {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
  }

  .form-group .required {
    color: var(--color-accent);
  }

  .form-input {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    color: var(--color-text);
    font-size: var(--text-base);
    transition: border-color var(--duration) var(--ease);
  }

  .form-input:focus {
    border-color: var(--color-accent);
    outline: none;
  }

  .faq-item {
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-sm) 0;
  }

  .faq-item summary {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: var(--text-lg);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
  }

  .faq-item summary::-webkit-details-marker { display: none; }

  .faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--color-accent);
    transition: transform var(--duration) var(--ease);
    flex-shrink: 0;
    margin-left: 1rem;
  }

  .faq-item[open] summary::after {
    transform: rotate(45deg);
  }

  .faq-item p {
    padding-top: var(--space-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
  }

  .star-rating {
    color: #FFB800;
    font-size: 1.125rem;
    letter-spacing: 0.1em;
  }

  /* Reveal animation */
  .reveal {
    opacity: 0;
    transform: translateY(1.5rem);
    transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  }

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

@layer sections {
  /* Nav */
  .nav {
    width: var(--container);
    margin-inline: auto;
    padding: var(--space-sm) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .nav__logo {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
  }

  .nav__logo span {
    color: var(--color-accent);
  }

  /* Hero */
  .hero {
    width: var(--container);
    margin-inline: auto;
    padding-block: var(--space-xl) var(--space-section);
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-lg);
    align-items: center;
  }

  .hero__headline {
    font-size: var(--text-hero);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-sm);
  }

  .hero__headline .accent {
    color: var(--color-accent);
  }

  .hero__subtext {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
    max-width: 540px;
  }

  .hero__actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
  }

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

  .hero__terminal {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-md);
    width: 100%;
    font-family: 'DM Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
  }

  .hero__terminal .prompt {
    color: var(--color-accent);
  }

  .hero__terminal .output {
    color: #34C759;
  }

  /* Problem / Solution */
  .problem-solution {
    width: var(--container);
    margin-inline: auto;
    padding-block: var(--space-section);
  }

  .problem-solution__header {
    text-align: center;
    margin-bottom: var(--space-lg);
  }

  .problem-solution__header h2 {
    font-size: var(--text-3xl);
  }

  .problem-solution__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  .problem-solution__before,
  .problem-solution__after {
    padding: var(--space-md);
    border-radius: var(--radius);
  }

  .problem-solution__before {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
  }

  .problem-solution__after {
    background: rgba(255, 107, 53, 0.06);
    border: 1px solid rgba(255, 107, 53, 0.2);
  }

  .problem-solution__before h3,
  .problem-solution__after h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-sm);
  }

  /* How It Works */
  .process {
    width: var(--container);
    margin-inline: auto;
    padding-block: var(--space-section);
  }

  .process__header {
    text-align: center;
    margin-bottom: var(--space-lg);
  }

  .process__header h2 {
    font-size: var(--text-3xl);
  }

  .process__header p {
    color: var(--color-text-secondary);
    font-size: var(--text-lg);
    margin-top: var(--space-xs);
    max-width: 600px;
    margin-inline: auto;
  }

  .process__steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }

  .process__step {
    text-align: center;
    padding: var(--space-md);
  }

  .process__number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-full);
    background: var(--color-accent);
    color: #fff;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--text-xl);
    margin-bottom: var(--space-sm);
  }

  .process__step h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-xs);
  }

  .process__step p {
    color: var(--color-text-secondary);
    line-height: 1.7;
  }

  /* Case study */
  .case-study {
    width: var(--container);
    margin-inline: auto;
    padding-block: var(--space-section);
  }

  .case-study__header {
    text-align: center;
    margin-bottom: var(--space-lg);
  }

  .case-study__header h2 {
    font-size: var(--text-3xl);
  }

  .case-study__card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }

  .case-study__transformation h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-sm);
  }

  .case-study__stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-md);
  }

  .case-study__stat {
    display: flex;
    gap: 0.75rem;
    align-items: baseline;
  }

  .case-study__stat-number {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-accent);
    flex-shrink: 0;
  }

  .case-study__stat-label {
    color: var(--color-text-secondary);
  }

  .case-study__quote blockquote {
    font-size: var(--text-lg);
    line-height: 1.7;
    font-style: italic;
    color: var(--color-text);
    position: relative;
    padding-left: var(--space-md);
    border-left: 3px solid var(--color-accent);
  }

  .case-study__quote footer {
    margin-top: var(--space-sm);
    padding-left: var(--space-md);
  }

  .case-study__quote footer strong {
    display: block;
    color: var(--color-text);
  }

  .case-study__quote footer span {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
  }

  /* Qualification */
  .qualification {
    width: var(--container);
    margin-inline: auto;
    padding-block: var(--space-section);
  }

  .qualification > h2 {
    font-size: var(--text-3xl);
    text-align: center;
    margin-bottom: var(--space-lg);
  }

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

  .qualification__yes,
  .qualification__no {
    padding: var(--space-md);
    border-radius: var(--radius);
  }

  .qualification__yes {
    background: rgba(255, 107, 53, 0.06);
    border: 1px solid rgba(255, 107, 53, 0.2);
  }

  .qualification__no {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
  }

  .qualification__yes h3,
  .qualification__no h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-sm);
  }

  /* FAQ */
  .faq {
    width: var(--container-narrow);
    margin-inline: auto;
    padding-block: var(--space-section);
  }

  .faq__header {
    text-align: center;
    margin-bottom: var(--space-lg);
  }

  .faq__header h2 {
    font-size: var(--text-3xl);
  }

  /* CTA Section */
  .cta-section {
    width: var(--container);
    margin-inline: auto;
    padding-block: var(--space-section);
  }

  .cta-section__content {
    background: var(--color-surface);
    border: 1px solid rgba(255, 107, 53, 0.3);
    border-radius: var(--radius);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
  }

  .cta-section__content h2 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-sm);
  }

  .cta-section__content p {
    color: var(--color-text-secondary);
    font-size: var(--text-lg);
    margin-bottom: var(--space-md);
    max-width: 600px;
    margin-inline: auto;
  }

  /* Contact form in CTA */
  .cta-form {
    max-width: 480px;
    margin: var(--space-md) auto 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
  }

  .cta-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
  }

  /* Footer */
  .footer {
    width: var(--container);
    margin-inline: auto;
    padding: var(--space-md) 0;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
  }

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

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

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

/* Responsive */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    order: -1;
  }

  .problem-solution__grid {
    grid-template-columns: 1fr;
  }

  .process__steps {
    grid-template-columns: 1fr;
  }

  .case-study__card {
    grid-template-columns: 1fr;
  }

  .qualification__grid {
    grid-template-columns: 1fr;
  }

  .cta-form .form-row {
    grid-template-columns: 1fr;
  }

  .nav {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
}