/* ============================
   m² AGENCY — DESIGN SYSTEM v3
   Sage green palette, polished
   ============================ */

:root {
  /* Type scale — fluid */
  --text-xs:   clamp(0.70rem,  0.65rem + 0.22vw, 0.813rem);
  --text-sm:   clamp(0.813rem, 0.75rem + 0.30vw, 0.938rem);
  --text-base: clamp(0.938rem, 0.88rem + 0.25vw, 1.063rem);
  --text-lg:   clamp(1.063rem, 0.95rem + 0.60vw, 1.375rem);
  --text-xl:   clamp(1.375rem, 1.1rem  + 1.10vw, 2.0rem);
  --text-2xl:  clamp(1.875rem, 1.1rem  + 2.30vw, 3.25rem);
  --text-3xl:  clamp(2.25rem,  0.9rem  + 3.80vw, 4.75rem);

  /* 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;

  /* Radius — restrained */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition: 200ms var(--ease-out);
  --transition-slow: 350ms var(--ease-out);

  /* Fonts */
  --font-display: 'Archivo', 'Helvetica Neue', sans-serif;
  --font-body: 'DM Sans', 'Helvetica Neue', sans-serif;

  /* Content widths */
  --content-default: 1160px;
  --content-narrow: 680px;
}

/* ── DARK MODE (DEFAULT) ── */
:root, [data-theme="dark"] {
  --color-bg:           #0d0f0c;
  --color-surface:      #141614;
  --color-surface-2:    #191b18;
  --color-border:       #242621;
  --color-divider:      #1d1f1b;
  --color-text:         #eceae1;
  --color-text-muted:   #797870;
  --color-text-faint:   #2e3029;
  --color-accent:       #7eb89a;
  --color-accent-hover: #9acfb4;
  --color-accent-dim:   rgba(126, 184, 154, 0.10);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.25);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.40);
  --shadow-lg: 0 16px 56px rgba(0,0,0,0.55);
}

/* ── LIGHT MODE ── */
[data-theme="light"] {
  --color-bg:           #f3f5f0;
  --color-surface:      #ffffff;
  --color-surface-2:    #eaede7;
  --color-border:       #d4d9ce;
  --color-divider:      #e0e5db;
  --color-text:         #161914;
  --color-text-muted:   #5d6459;
  --color-text-faint:   #adb4a8;
  --color-accent:       #3a7a59;
  --color-accent-hover: #285e42;
  --color-accent-dim:   rgba(58, 122, 89, 0.08);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);
}

/* ── BASE RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  hanging-punctuation: first last;
}
body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.12; }
p, li { text-wrap: pretty; }

/* ── CONTAINER ── */
.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-16));
}
.container-narrow { max-width: var(--content-narrow); }

/* ============================
   NAV
   ============================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) clamp(var(--space-5), 5vw, var(--space-16));
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.nav.scrolled {
  border-bottom-color: var(--color-border);
}

/* LOGO */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-text);
  transition: opacity var(--transition);
}
.logo:hover { opacity: 0.65; }
.logo-mark {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--color-text);
}
.logo-divider {
  width: 1px;
  height: 18px;
  background: var(--color-border);
  flex-shrink: 0;
}
.logo-wordmark {
  font-family: var(--font-display);
  font-size: 9.5px;
  font-weight: 300;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  line-height: 1.3;
}

/* NAV LINKS */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-muted);
}
.nav-links a { transition: color var(--transition); }
.nav-links a:hover { color: var(--color-text); }
.nav-cta {
  color: var(--color-accent) !important;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.nav-cta:hover { color: var(--color-accent-hover) !important; }

/* LANG TOGGLE */
.lang-toggle {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  padding: 5px var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}
.lang-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

/* ============================
   HERO
   ============================ */
.hero {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--space-20);
  padding-block: calc(var(--space-24) + 64px) var(--space-24);
  padding-inline: clamp(var(--space-5), 5vw, var(--space-16));
  max-width: var(--content-default);
  margin-inline: auto;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* TAG */
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  width: fit-content;
}
.hero-tag::before {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: var(--color-accent);
  flex-shrink: 0;
}

/* HEADLINE */
.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 300;
  color: var(--color-text);
  letter-spacing: -0.035em;
  line-height: 1.08;
}
.hero h1 em {
  font-style: italic;
  color: var(--color-accent);
}

/* SUBHEADING */
.hero-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 44ch;
  line-height: 1.7;
}

/* ACTIONS */
.hero-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding-top: var(--space-2);
}

/* ── STAT CARDS (right column) ── */
.hero-visual {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.hero-stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-8) var(--space-10);
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-slow), box-shadow var(--transition-slow);
}
.hero-stat-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--color-accent);
  opacity: 0;
  transition: opacity var(--transition-slow);
}
.hero-stat-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 30%, var(--color-border));
  box-shadow: var(--shadow-md);
}
.hero-stat-card:hover::before { opacity: 1; }

.stat-num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 300;
  color: var(--color-text);
  letter-spacing: -0.04em;
  line-height: 1;
  min-width: 4ch;
}
.stat-info { display: flex; flex-direction: column; gap: 3px; }
.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.3;
}
.stat-sub {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ============================
   BUTTONS
   ============================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  background: var(--color-accent);
  color: #0b0f0c;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  border-radius: var(--radius-sm);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 6px 20px color-mix(in srgb, var(--color-accent) 35%, transparent);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4) var(--space-8);
  color: var(--color-text-muted);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.btn-ghost-sm {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid color-mix(in srgb, var(--color-accent) 40%, transparent);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  width: fit-content;
  margin-top: auto;
}
.btn-ghost-sm:hover {
  background: var(--color-accent-dim);
  border-color: var(--color-accent);
}

.btn-full { width: 100%; }

/* ============================
   SECTIONS
   ============================ */
.section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-24));
}
.section-alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: clamp(var(--space-10), 4vw, var(--space-16));
}

/* SECTION TAG */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.section-tag::before {
  content: '';
  display: block;
  width: 22px;
  height: 1px;
  background: var(--color-accent);
  flex-shrink: 0;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 300;
  color: var(--color-text);
  letter-spacing: -0.03em;
}
.section-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.7;
}

/* ============================
   MARKETS GRID
   ============================ */
.markets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.market-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: box-shadow var(--transition-slow), transform var(--transition-slow), border-color var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.market-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out);
}
.market-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.market-card:hover::after { transform: scaleX(1); }
.market-card.featured {
  border-color: color-mix(in srgb, var(--color-accent) 22%, var(--color-border));
}
.market-card.more {
  background: var(--color-surface-2);
  justify-content: space-between;
}

.market-flag { font-size: 1.75rem; line-height: 1; margin-bottom: var(--space-1); }
.market-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.market-yield {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.03em;
}
.market-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: none;
  flex: 1;
}
.market-from {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: 0.06em;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
  margin-top: auto;
}

/* ============================
   HOW IT WORKS
   ============================ */
.steps {
  display: grid;
  grid-template-columns: 1fr 40px 1fr 40px 1fr;
  align-items: start;
  gap: var(--space-6);
}
.step { display: flex; flex-direction: column; gap: var(--space-4); }
.step-num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 300;
  color: var(--color-text-faint);
  line-height: 1;
  letter-spacing: -0.04em;
}
.step h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: none;
}
.step-divider {
  display: flex;
  align-items: flex-start;
  padding-top: 6px;
  justify-content: center;
}
.step-divider::after {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-accent);
  opacity: 0.4;
  margin-top: calc(var(--text-2xl) * 0.55);
}

/* ============================
   WHY m² — PILLARS
   ============================ */
.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}
.pillar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition: border-color var(--transition-slow), box-shadow var(--transition-slow);
}
.pillar:hover {
  border-color: color-mix(in srgb, var(--color-accent) 45%, var(--color-border));
  box-shadow: var(--shadow-sm);
}
.pillar-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid color-mix(in srgb, var(--color-accent) 30%, var(--color-border));
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  font-size: 14px;
}
.pillar h3 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.pillar p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.70;
  max-width: none;
}

/* ============================
   CONTACT FORM
   ============================ */
.contact-section { background: var(--color-surface); }
.contact-section .section-header {
  text-align: center;
  align-items: center;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-8);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}
.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: border-color var(--transition);
  outline: none;
  resize: none;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--color-text-muted); opacity: 0.7; }
.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus { border-color: var(--color-accent); }
.contact-form select { appearance: none; cursor: pointer; }

.form-note {
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  opacity: 0.7;
}

/* ============================
   FOOTER
   ============================ */
.footer {
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-border);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: var(--space-8);
}
.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-links {
  display: flex;
  gap: var(--space-8);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-links a { transition: color var(--transition); }
.footer-links a:hover { color: var(--color-text); }
.footer-copy {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  opacity: 0.5;
  letter-spacing: 0.04em;
}

/* ============================
   TOAST
   ============================ */
.success-toast {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  background: var(--color-accent);
  color: #0b0f0c;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: transform 0.4s var(--ease-out);
  z-index: 200;
  white-space: nowrap;
}
.success-toast.show { transform: translateX(-50%) translateY(0); }

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 1024px) {
  .markets-grid { grid-template-columns: repeat(2, 1fr); }
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .steps {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .step-divider { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: var(--space-4); }
}

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: calc(var(--space-16) + 64px);
    gap: var(--space-10);
  }
  .nav-links a:not(.nav-cta) { display: none; }
  .markets-grid { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}