/* ============================================
   MAGINAI — Design Tokens & Component Styles
   ============================================ */

/* --- Type Scale (fluid) --- */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* --- Spacing (4px base) --- */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* --- Fonts --- */
  --font-display: 'Cabinet Grotesk', 'General Sans', 'Helvetica Neue', sans-serif;
  --font-body: 'General Sans', 'Inter', 'Helvetica Neue', sans-serif;

  /* --- Radius --- */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-full: 9999px;

  /* --- Transitions --- */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* --- Content widths --- */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
}

/* --- Light Mode (Default) --- */
:root, [data-theme="light"] {
  --color-bg:             #F4F5F0;
  --color-surface:        #F8FAF8;
  --color-surface-2:      #FFFFFF;
  --color-surface-offset: #EAEDEA;
  --color-border:         #D0D6D0;
  --color-divider:        #DEE3DE;

  --color-text:           #151A15;
  --color-text-muted:     #5A6B5A;
  --color-text-faint:     #8FA08F;

  --color-primary:        #0F7B5F;
  --color-primary-hover:  #0A6048;
  --color-primary-surface: #E6F5F0;
  --color-primary-text:   #FFFFFF;

  --color-accent:         #D4880C;
  --color-accent-surface: #FEF7E8;

  --color-accent-green:   #0F7B5F;
  --color-accent-green-surface: #E6F5F0;

  --shadow-sm: 0 1px 2px rgba(15,26,15,0.05);
  --shadow-md: 0 4px 12px rgba(15,26,15,0.08);
  --shadow-lg: 0 12px 32px rgba(15,26,15,0.10);
}

/* --- Dark Mode --- */
[data-theme="dark"] {
  --color-bg:             #0F110F;
  --color-surface:        #161A16;
  --color-surface-2:      #1E221E;
  --color-surface-offset: #131613;
  --color-border:         #2A332A;
  --color-divider:        #232B23;

  --color-text:           #E5E8E5;
  --color-text-muted:     #85928A;
  --color-text-faint:     #586058;

  --color-primary:        #3DC9A0;
  --color-primary-hover:  #30B88D;
  --color-primary-surface: #122A22;
  --color-primary-text:   #FFFFFF;

  --color-accent:         #F0A832;
  --color-accent-surface: #2A2010;

  --color-accent-green:   #3DC9A0;
  --color-accent-green-surface: #122A22;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #0F110F;
    --color-surface:        #161A16;
    --color-surface-2:      #1E221E;
    --color-surface-offset: #131613;
    --color-border:         #2A332A;
    --color-divider:        #232B23;
    --color-text:           #E5E8E5;
    --color-text-muted:     #85928A;
    --color-text-faint:     #586058;
    --color-primary:        #3DC9A0;
    --color-primary-hover:  #30B88D;
    --color-primary-surface: #122A22;
    --color-primary-text:   #FFFFFF;
    --color-accent:         #F0A832;
    --color-accent-surface: #2A2010;
    --color-accent-green:   #3DC9A0;
    --color-accent-green-surface: #122A22;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.4);
  }
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

body {
  font-family: var(--font-body);
  overflow-x: hidden;
}

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

.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container { padding-inline: var(--space-8); }
}

/* ============================================
   HEADER / NAV
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-3) 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
  text-decoration: none;
}
.logo:hover { text-decoration: none; }

.logo-mark {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--radius-lg);
  padding: var(--space-2) var(--space-5);
  transition: background var(--transition-interactive),
              color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-primary-text);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-large {
  font-size: var(--text-base);
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-xl);
}

/* ============================================
   HERO
   ============================================ */

.hero {
  padding: clamp(var(--space-16), 10vw, var(--space-32)) 0 clamp(var(--space-12), 8vw, var(--space-24));
  text-align: left;
}

.hero .container {
  max-width: var(--content-default);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-primary-surface);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  letter-spacing: 0.02em;
}

.hero-badge__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-cta__note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ============================================
   SECTIONS (shared)
   ============================================ */

.section {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) 0;
}

.section-header {
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-12));
}

.section-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
}

/* ============================================
   PAIN POINTS
   ============================================ */

.pains {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.pains-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .pains-grid { grid-template-columns: repeat(3, 1fr); }
}

.pain-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.pain-card__icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
}

.pain-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.pain-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.pains-transition {
  font-size: var(--text-lg);
  color: var(--color-text);
  font-weight: 600;
  font-family: var(--font-display);
  text-align: center;
}

.pains-transition span {
  color: var(--color-primary);
}

/* ============================================
   HOW IT WORKS — 4 steps
   ============================================ */

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  counter-reset: step-counter;
}

@media (min-width: 768px) {
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 960px) {
  .steps-grid { grid-template-columns: repeat(4, 1fr); }
}

.step-card {
  position: relative;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  counter-increment: step-counter;
}

.step-card::before {
  content: counter(step-counter);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: var(--color-primary-text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.step-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.step-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================
   TWO MODES
   ============================================ */

.modes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .modes-grid { grid-template-columns: repeat(2, 1fr); }
}

.mode-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
}

.mode-card--primary {
  background: var(--color-primary-surface);
  border-color: oklch(from var(--color-primary) l c h / 0.18);
}

.mode-card__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
}

.mode-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}

.mode-card ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.mode-card li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.mode-card li svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-accent-green);
  margin-top: 2px;
}

/* ============================================
   FEATURES — 7 cards
   ============================================ */

.features {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 960px) {
  .features-grid { grid-template-columns: repeat(3, 1fr); }
  .features-grid .feature-card:last-child {
    grid-column: 2;
  }
}

.feature-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-5);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.feature-card__icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.feature-card p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ============================================
   FAQ
   ============================================ */

.faq-list {
  max-width: var(--content-narrow);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}

.faq-item {
  border-bottom: 1px solid var(--color-divider);
}
.faq-item:first-child {
  border-top: 1px solid var(--color-divider);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  background: transparent;
  border: none;
  gap: var(--space-4);
}

.faq-question:hover { color: var(--color-primary); }

.faq-question svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--color-text-faint);
}

.faq-item.open .faq-question svg {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 350ms cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-item.open .faq-answer {
  max-height: 250px;
}

.faq-answer p {
  padding-bottom: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================
   FORM
   ============================================ */

.cta-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
}

.cta-section .container {
  max-width: var(--content-narrow);
  text-align: center;
}

.cta-tagline {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.cta-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-10);
}

.form-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  text-align: left;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .form-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid .form-group--full { grid-column: 1 / -1; }
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.form-group label .optional {
  font-weight: 400;
  color: var(--color-text-faint);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.form-group input::placeholder {
  color: var(--color-text-faint);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px oklch(from var(--color-primary) l c h / 0.12);
}

.form-group input.invalid,
.form-group select.invalid {
  border-color: #C0392B;
}

.form-error {
  font-size: var(--text-xs);
  color: #C0392B;
  margin-top: var(--space-1);
  display: none;
}

.form-group input.invalid + .form-error,
.form-group select.invalid + .form-error {
  display: block;
}

.form-error-banner {
  background: rgba(192, 57, 43, 0.08);
  border: 1px solid #C0392B;
  border-radius: var(--radius-md);
  color: #C0392B;
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
  text-align: center;
}

.form-error-banner a {
  color: #C0392B;
  font-weight: 600;
  text-decoration: underline;
}

.form-submit-wrap {
  margin-top: var(--space-6);
  text-align: center;
}

.form-submit-wrap .btn {
  min-width: 240px;
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--space-8);
}

.form-success__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-4);
  color: var(--color-accent-green);
}

.form-success h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.form-success p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 40ch;
  margin: 0 auto;
}

/* Honeypot */
.ohnohoney {
  opacity: 0;
  position: absolute;
  top: 0;
  left: 0;
  height: 0;
  width: 0;
  z-index: -1;
  overflow: hidden;
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-divider);
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer-copy a {
  color: var(--color-text-faint);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.footer-copy a:hover {
  color: var(--color-text-muted);
}

/* ============================================
   SCROLL ANIMATIONS (IntersectionObserver)
   ============================================ */

.fade-in {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* No-JS fallback */
@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
  }
}

/* ============================================
   LOADING STATE FOR BUTTON
   ============================================ */

.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid transparent;
  border-top-color: var(--color-primary-text);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}