/* style.css — InventarFlow design tokens + components */

:root {
  /* Type scale */
  --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, 4.5rem);

  /* Spacing */
  --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;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

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

  --content-narrow: 640px;
  --content-default: 1000px;
  --content-wide: 1240px;
  --content-full: 100%;

  --font-display: 'Cabinet Grotesk', 'General Sans', 'Segoe UI', sans-serif;
  --font-body: 'Satoshi', 'Inter', 'Segoe UI', sans-serif;
}

/* LIGHT MODE — InventarFlow palette: cool neutral surfaces, cobalt primary, amber highlight */
:root,
[data-theme='light'] {
  --color-bg: #f6f7fa;
  --color-surface: #ffffff;
  --color-surface-2: #fbfcfd;
  --color-surface-offset: #eef1f6;
  --color-surface-offset-2: #e3e8ef;
  --color-surface-dynamic: #dde3ec;
  --color-divider: #e5e9ef;
  --color-border: #d7dce4;

  --color-text: #10131a;
  --color-text-muted: #5b6270;
  --color-text-faint: #9aa2b1;
  --color-text-inverse: #f7f8fb;

  /* Primary — Flow Cobalt */
  --color-primary: #1e4fd6;
  --color-primary-hover: #1739a8;
  --color-primary-active: #102a7d;
  --color-primary-highlight: #dbe4fb;

  /* Accent — Warm Amber (used sparingly) */
  --color-accent: #f5a524;
  --color-accent-hover: #d98a0f;
  --color-accent-active: #b06f0a;
  --color-accent-highlight: #fbe7c6;

  --color-success: #2f9e44;
  --color-success-highlight: #d9f0dd;
  --color-warning: #c9780c;
  --color-warning-highlight: #f6e3c7;
  --color-error: #d23c3c;
  --color-error-highlight: #f7d9d9;

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 260 / 0.06);
  --shadow-md: 0 6px 16px oklch(0.2 0.02 260 / 0.08);
  --shadow-lg: 0 16px 40px oklch(0.2 0.02 260 / 0.14);
}

/* DARK MODE */
[data-theme='dark'] {
  --color-bg: #0a0d13;
  --color-surface: #10141c;
  --color-surface-2: #141924;
  --color-surface-offset: #161c27;
  --color-surface-offset-2: #1c232f;
  --color-surface-dynamic: #232b39;
  --color-divider: #1d2430;
  --color-border: #29323f;

  --color-text: #e8eaf0;
  --color-text-muted: #9aa3b2;
  --color-text-faint: #5e6779;
  --color-text-inverse: #10141c;

  --color-primary: #7d9bff;
  --color-primary-hover: #a1b9ff;
  --color-primary-active: #c1d0ff;
  --color-primary-highlight: #1c2747;

  --color-accent: #ffc24d;
  --color-accent-hover: #ffd581;
  --color-accent-active: #ffe4ac;
  --color-accent-highlight: #3a2f16;

  --color-success: #59c46f;
  --color-success-highlight: #16321d;
  --color-warning: #e2a13f;
  --color-warning-highlight: #3a2c15;
  --color-error: #e8696e;
  --color-error-highlight: #3a1c1e;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 6px 16px oklch(0 0 0 / 0.35);
  --shadow-lg: 0 16px 40px oklch(0 0 0 / 0.5);
}

/* ============ LAYOUT PRIMITIVES ============ */

.wrap {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-highlight);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
}

.section-title {
  font-size: var(--text-xl);
  font-weight: 650;
  margin-bottom: var(--space-4);
  max-width: 40ch;
}

.section-lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  font-family: var(--font-body);
  font-weight: 400;
}

.section-head {
  margin-bottom: var(--space-16);
}
.section-head.center {
  text-align: center;
  margin-inline: auto;
}
.section-head.center .section-lede {
  margin-inline: auto;
}

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

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}
.header--scrolled {
  border-color: var(--color-divider);
  box-shadow: var(--shadow-sm);
}
.header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
  position: relative;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 650;
  font-size: var(--text-base);
  color: var(--color-text);
  text-decoration: none;
}
.logo svg {
  width: 30px;
  height: 30px;
  color: var(--color-primary);
  flex-shrink: 0;
}
.logo strong {
  color: var(--color-primary);
  font-weight: 650;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.nav-links {
  display: flex;
  gap: var(--space-6);
}
.nav-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
}
.nav-links a:hover {
  color: var(--color-text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}
.theme-toggle:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}
.nav-toggle:hover {
  background: var(--color-surface-offset);
}

/* ============ BUTTONS ============ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-surface-offset);
}
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}
.btn-block {
  width: 100%;
}

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

.hero {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-12), 6vw, var(--space-20));
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-16);
  align-items: center;
}
.hero-copy h1 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-6);
}
.hero-copy h1 em {
  font-style: normal;
  color: var(--color-primary);
}
.hero-copy p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-weight: 400;
  max-width: 52ch;
  margin-bottom: var(--space-8);
}
.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}
.hero-meta {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.hero-meta svg {
  width: 16px;
  height: 16px;
  color: var(--color-success);
  flex-shrink: 0;
}
.hero-visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  box-shadow: var(--shadow-lg);
}
.hero-visual img {
  width: 100%;
  height: auto;
}

/* ============ LOGO STRIP / PROBLEM ============ */

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.problem-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.problem-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding: var(--space-4);
  border-radius: var(--radius-md);
}
.problem-item .dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-error);
  margin-top: 0.55em;
}
.problem-item p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}
.problem-item strong {
  color: var(--color-text);
  display: block;
  margin-bottom: var(--space-1);
  font-weight: 600;
}
.problem-visual img {
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-divider);
  box-shadow: var(--shadow-md);
}

/* ============ FEATURE GRID ============ */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
}
.feature-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
}
.feature-icon svg {
  width: 22px;
  height: 22px;
}
.feature-card h3 {
  font-size: var(--text-lg);
  font-weight: 650;
  margin-bottom: var(--space-2);
}
.feature-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ============ SPOTLIGHT (Kassenbericht) ============ */

.spotlight {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 6vw, var(--space-16));
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
.spotlight-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-6);
}
.spotlight-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.spotlight-list svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 0.15em;
}
.spotlight-card {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.spotlight-card .row {
  display: flex;
  justify-content: space-between;
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
  font-size: var(--text-sm);
}
.spotlight-card .row:last-child {
  border-bottom: none;
}
.spotlight-card .row span:first-child {
  color: var(--color-text-muted);
}
.spotlight-card .row span:last-child {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.spotlight-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-accent-highlight);
  color: var(--color-accent-hover);
  font-size: var(--text-xs);
  font-weight: 650;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

/* ============ AUDIENCE ============ */

.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}
.audience-card {
  text-align: center;
  padding: var(--space-8) var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
}
.audience-card .emoji-icon {
  width: 48px;
  height: 48px;
  margin-inline: auto;
  margin-bottom: var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}
.audience-card .emoji-icon svg {
  width: 22px;
  height: 22px;
}
.audience-card h3 {
  font-size: var(--text-base);
  font-weight: 650;
  margin-bottom: var(--space-1);
  font-family: var(--font-body);
}
.audience-card p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ============ PRICING ============ */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  align-items: stretch;
  max-width: 920px;
  margin-inline: auto;
}
.price-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
}
.price-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  position: relative;
}
.price-card .plan-name {
  font-size: var(--text-sm);
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.price-card.featured .plan-name {
  color: var(--color-primary);
}
.price-card .plan-tag {
  position: absolute;
  top: -13px;
  right: var(--space-6);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--text-xs);
  font-weight: 650;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}
.price-card ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-block: var(--space-6);
  flex-grow: 1;
}
.price-card li {
  display: flex;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  align-items: flex-start;
}
.price-card li svg {
  width: 16px;
  height: 16px;
  color: var(--color-success);
  flex-shrink: 0;
  margin-top: 0.2em;
}

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

.cta-section {
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-active) 100%);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 8vw, var(--space-20));
  color: var(--color-text-inverse);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-12);
  align-items: center;
}
.cta-copy .eyebrow {
  background: oklch(1 0 0 / 0.14);
  color: var(--color-text-inverse);
}
.cta-copy h2 {
  font-size: var(--text-xl);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-4);
  font-weight: 650;
}
.cta-copy p {
  color: oklch(1 0 0 / 0.82);
  font-size: var(--text-base);
  max-width: 46ch;
}
.cta-form {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  box-shadow: var(--shadow-lg);
}
.cta-form label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: var(--space-1);
}
.cta-form input,
.cta-form textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  color: var(--color-text);
  font-size: var(--text-sm);
}
.cta-form input:focus,
.cta-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}
.cta-form .form-success {
  display: none;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-success);
  font-size: var(--text-sm);
  font-weight: 600;
  background: var(--color-success-highlight);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
}
.cta-form.submitted .form-fields {
  display: none;
}
.cta-form.submitted .form-success {
  display: flex;
}
.cta-form .form-error {
  display: none;
  color: var(--color-error);
  font-size: var(--text-xs);
  font-weight: 600;
  text-align: center;
}
.cta-form.form-error-state .form-error {
  display: block;
}
.cta-form button[type='submit']:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

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

.footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-16) var(--space-10);
}
.footer .wrap {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-10);
}
.footer-brand p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-top: var(--space-4);
  max-width: 32ch;
}
.footer-col h4 {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
  font-family: var(--font-body);
  font-weight: 650;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-col a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
}
.footer-col a:hover {
  color: var(--color-text);
}
.footer-bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ============ MOBILE ============ */

@media (max-width: 920px) {
  .nav-links {
    display: none;
  }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    padding: var(--space-6);
    gap: var(--space-4);
    border-bottom: 1px solid var(--color-divider);
    box-shadow: var(--shadow-md);
  }
  .nav-toggle {
    display: flex;
  }
  .hero .wrap,
  .problem-grid,
  .spotlight,
  .cta-section {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    order: -1;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .audience-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .footer .wrap {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }
}

@media (max-width: 560px) {
  .feature-grid,
  .audience-grid {
    grid-template-columns: 1fr;
  }
  .footer .wrap {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-2);
  }
}