/* ============================================
   Bright Leaf Design — Shared Styles
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Dark Mode (Default) Colors */
  --bg-base: #06090A;
  --bg-surface: #0E1310;
  --bg-elevated: #141B17;
  --border-subtle: #1C2722;
  --border: #263229;
  --green-primary: #22C55E;
  --green-hover: #16A34A;
  --green-dim: #166534;
  --amber-accent: #F59E0B;
  --amber-hover: #D97706;
  --text-primary: #EEF2EF;
  --text-secondary: #8FA898;
  --text-muted: #4E6259;
  --success: #22C55E;
  --error: #EF4444;
  --white: #FFFFFF;

  /* Typography */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'DM Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-8: 48px;
  --space-10: 64px;
  --space-12: 80px;
  --space-16: 96px;
  --space-20: 128px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4), 0 2px 6px rgba(0,0,0,0.25);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5), 0 6px 20px rgba(0,0,0,0.3);
  --shadow-glow-green: 0 0 0 1px rgba(34,197,94,0.2), 0 0 32px rgba(34,197,94,0.08);
  --shadow-glow-amber: 0 0 0 1px rgba(245,158,11,0.2), 0 0 32px rgba(245,158,11,0.08);
  --shadow-inner-border: inset 0 1px 0 rgba(255,255,255,0.05);

  /* Layout */
  --max-width: 1200px;
  --grid-columns: 12;
  --grid-gutter: 24px;
  --grid-margin: 48px;
  --content-width: 760px;

  /* Breakpoints (for reference, use in media queries) */
  --bp-mobile: 768px;
  --bp-tablet: 1024px;
  --bp-desktop: 1280px;
}

/* --- Font-face Declarations (self-hosted) --- */
@font-face {
  font-family: 'DM Serif Display';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/DMSerifDisplay-Regular.ttf') format('truetype');
}
@font-face {
  font-family: 'DM Serif Display';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/DMSerifDisplay-Italic.ttf') format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('fonts/Inter-Light.ttf') format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/Inter-Regular.ttf') format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/Inter-Medium.ttf') format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/Inter-SemiBold.ttf') format('truetype');
}
@font-face {
  font-family: 'DM Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/DMMono-Regular.ttf') format('truetype');
}
@font-face {
  font-family: 'DM Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/DMMono-Medium.ttf') format('truetype');
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--text-primary);
  background-color: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.015em;
}

.overline {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--amber-accent);
  display: block;
  margin-bottom: var(--space-4);
}

.display {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

h1, .h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.015em;
}

h2, .h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h3, .h3 {
  font-family: var(--font-body);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.005em;
}

h4, .h4 {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
}

.body-large {
  font-size: 18px;
  line-height: 1.65;
}

.body {
  font-size: 16px;
  line-height: 1.65;
}

.small {
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.01em;
}

.micro {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.mono {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--grid-margin);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gutter);
}

section {
  padding-top: clamp(64px, 8vw, 120px);
  padding-bottom: clamp(64px, 8vw, 120px);
}

.hero {
  padding-top: clamp(96px, 12vw, 160px);
  padding-bottom: clamp(80px, 10vw, 140px);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 24px;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: none;
  cursor: pointer;
  transition: background 150ms ease, transform 100ms ease;
}

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

.btn:disabled {
  background: var(--green-dim);
  color: var(--text-muted);
  cursor: not-allowed;
}

.btn-primary {
  background: var(--green-primary);
  color: var(--bg-base);
}

.btn-primary:hover {
  background: var(--green-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 11px 23px;
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
  background: var(--bg-elevated);
}

.btn-ghost {
  background: transparent;
  color: var(--green-primary);
  padding: 0;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.btn-ghost:hover {
  color: var(--green-hover);
}

.btn-ghost:hover .arrow {
  transform: translateX(4px);
}

.btn-large {
  padding: 16px 32px;
  font-size: 16px;
  border-radius: 8px;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 16px 32px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: background 150ms ease, transform 100ms ease;
  text-decoration: none;
}

.btn-cta-primary {
  background: var(--green-primary);
  color: var(--bg-base);
}

.btn-cta-primary:hover {
  background: var(--green-hover);
}

.btn-cta-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-cta-secondary:hover {
  border-color: var(--text-secondary);
  background: var(--bg-elevated);
}

/* --- Cards --- */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: var(--space-6);
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.card:hover {
  border-color: var(--border);
  box-shadow: 0 0 0 1px var(--border), 0 8px 32px rgba(0,0,0,0.4);
}

.card-portfolio {
  background: var(--bg-elevated);
  border-radius: 16px;
  overflow: hidden;
  padding: 0;
  transition: transform 250ms ease;
}

.card-portfolio:hover {
  transform: translateY(-4px);
}

.card-portfolio img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-portfolio-content {
  padding: var(--space-6);
}

.card-pricing {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 40px 32px;
}

.card-pricing-featured {
  border: 1px solid var(--green-primary);
  box-shadow: var(--shadow-glow-green);
}

.card-step {
  background: transparent;
  border: none;
  padding: 0;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber-accent);
}

/* --- Form Elements --- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
  display: block;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text-primary);
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

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

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--green-primary);
  box-shadow: 0 0 0 3px rgba(34,197,94,0.12);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-helper {
  font-size: 12px;
  margin-top: var(--space-1);
  color: var(--text-muted);
}

.form-error {
  font-size: 12px;
  margin-top: var(--space-1);
  color: var(--error);
}

/* --- Badges & Tags --- */
.badge {
  display: inline-flex;
  align-items: center;
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.badge-green {
  background: rgba(34,197,94,0.1);
  color: var(--green-primary);
  border: 1px solid rgba(34,197,94,0.2);
}

.badge-amber {
  background: rgba(245,158,11,0.1);
  color: var(--amber-accent);
  border: 1px solid rgba(245,158,11,0.2);
}

/* --- Navigation --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  background: rgba(6,9,10,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--grid-margin);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 150ms ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link.active {
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--green-primary);
}

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

/* Mobile Nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.nav-toggle-icon {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 20px;
}

.nav-toggle-icon span {
  display: block;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: transform 200ms ease, opacity 200ms ease;
}

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(6,9,10,0.95);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  font-size: 24px;
  color: var(--text-secondary);
  transition: color 150ms ease;
}

.mobile-menu a:hover {
  color: var(--text-primary);
}

/* --- Footer --- */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-16) var(--grid-margin) 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: var(--space-4);
  max-width: 280px;
}

.footer-col h4 {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: var(--space-3);
}

.footer-col a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 150ms ease;
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
}

/* --- Section Utilities --- */
.section-divider {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: var(--space-12) 0;
}

.section-header {
  margin-bottom: var(--space-12);
}

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

.section-header .lead {
  max-width: 600px;
  color: var(--text-secondary);
  margin-top: var(--space-4);
}

/* --- Stats --- */
.stat-value {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 64px);
  color: var(--text-primary);
  line-height: 1;
}

.stat-label {
  font-size: 16px;
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

/* --- Process --- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.process-card {
  text-align: left;
}

.process-card .step-number {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber-accent);
  margin-bottom: var(--space-4);
}

.process-card h3 {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.process-card p {
  font-size: 15px;
  color: var(--text-secondary);
}

/* --- Portfolio Grid --- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

/* --- Pricing Grid --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

/* --- CTA Band --- */
.cta-band {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: var(--space-16);
  text-align: center;
}

.cta-band h2 {
  margin-bottom: var(--space-4);
}

.cta-band p {
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto var(--space-8);
}

/* --- Scroll Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms ease, transform 600ms cubic-bezier(0.16,1,0.3,1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* --- Responsive --- */
@media (max-width: 1023px) {
  .grid {
    gap: 16px;
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .portfolio-grid,
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

@media (max-width: 767px) {
  :root {
    --grid-margin: 16px;
  }

  section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .hero {
    padding-top: 96px;
    padding-bottom: 80px;
  }

  .portfolio-grid,
  .process-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

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

  .btn-large,
  .btn-cta {
    width: 100%;
  }

  .cta-band {
    padding: var(--space-10);
  }

  .card-pricing {
    padding: 32px 24px;
  }
}