/* ========================================
   Paladin Mining Exposed — Design System
   ======================================== */

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

:root {
  /* Colors */
  --color-primary: #2D6A4F;
  --color-primary-dark: #1B4332;
  --color-primary-light: #D8F3DC;
  --color-primary-lighter: #F0FFF4;
  --color-accent: #D4A843;
  --color-accent-dark: #B8922F;
  --color-accent-light: #FFF3D0;
  --color-text: #2B2D42;
  --color-text-muted: #6B7280;
  --color-text-light: #9CA3AF;
  --color-bg: #FAFAF5;
  --color-surface: #FFFFFF;
  --color-border: #E5E7EB;
  --color-success: #059669;
  --color-success-light: #D1FAE5;
  --color-danger: #C1121F;
  --color-danger-light: #FEE2E2;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.25rem;
  --line-height-tight: 1.2;
  --line-height-normal: 1.6;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --max-width: 1120px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
  --transition: 0.2s ease;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* --- Typography --- */
h1, h2, h3, h4 {
  line-height: var(--line-height-tight);
  color: var(--color-text);
  font-weight: 700;
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
  color: var(--color-text-muted);
  max-width: 65ch;
}

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

a:hover {
  color: var(--color-primary-dark);
}

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

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

.section {
  padding: var(--space-4xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  margin: 0 auto;
  font-size: var(--font-size-lg);
}

/* --- Navbar --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-primary-dark);
  text-decoration: none;
}

.navbar-brand svg {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

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

.navbar-nav a {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
  padding: var(--space-sm) 0;
}

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--color-primary);
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 2px;
}

.lang-switcher button {
  background: none;
  border: none;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  font-family: var(--font-family);
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: calc(var(--radius) - 2px);
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.lang-switcher button:hover {
  color: var(--color-text);
}

.lang-switcher button.active {
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* Mobile menu */
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  color: var(--color-text);
}

.navbar-toggle svg {
  width: 24px;
  height: 24px;
}

@media (max-width: 768px) {
  .navbar-toggle { display: block; }

  .navbar-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow);
  }

  .navbar-nav.open { display: flex; }

  .lang-switcher {
    align-self: flex-start;
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  font-family: var(--font-family);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1;
}

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

.btn-primary {
  background: var(--color-accent);
  color: #1a1a1a;
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  color: #1a1a1a;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: var(--color-primary);
  color: white;
}

.btn-secondary:hover {
  background: var(--color-primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* --- Hero --- */
.hero {
  background: linear-gradient(170deg, var(--color-primary-lighter) 0%, var(--color-bg) 60%);
  padding: var(--space-4xl) 0;
  text-align: center;
}

.hero h1 {
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-4xl);
}

.hero h1 span {
  color: var(--color-primary);
}

.hero p {
  margin: 0 auto var(--space-2xl);
  font-size: var(--font-size-lg);
  max-width: 600px;
}

.hero .btn {
  margin-bottom: var(--space-2xl);
}

.trust-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

.trust-badge svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
  flex-shrink: 0;
}

@media (min-width: 1024px) {
  .hero h1 { font-size: var(--font-size-5xl); }
}

/* --- Cards --- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

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

.card p {
  font-size: var(--font-size-sm);
}

/* --- Grid Layouts --- */
.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 640px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

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

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

@media (min-width: 640px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* --- Context Section --- */
.context-section {
  background: var(--color-surface);
}

.context-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

@media (min-width: 768px) {
  .context-content { grid-template-columns: 1fr 1fr; }
}

.context-text h2 {
  margin-bottom: var(--space-lg);
}

.context-text p {
  margin-bottom: var(--space-md);
  font-size: var(--font-size-base);
}

.context-text p:last-child {
  margin-bottom: 0;
}

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

.warning-card {
  background: var(--color-danger-light);
  border: 1px solid #FECACA;
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  max-width: 380px;
}

.warning-card svg {
  width: 56px;
  height: 56px;
  color: var(--color-danger);
  margin-bottom: var(--space-md);
}

.warning-card h3 {
  color: var(--color-danger);
  margin-bottom: var(--space-sm);
}

.warning-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: 0 auto;
}

/* --- Steps Section --- */
.steps-section {
  background: var(--color-bg);
}

.step-card {
  position: relative;
  text-align: center;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #1a1a1a;
  font-weight: 700;
  font-size: var(--font-size-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
}

.step-card h3 {
  margin-bottom: var(--space-sm);
}

/* --- Privacy Section --- */
.privacy-section {
  background: var(--color-primary-dark);
  color: white;
}

.privacy-section .section-header h2 {
  color: white;
}

.privacy-section .section-header p {
  color: rgba(255,255,255,0.75);
}

.privacy-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.08);
}

.privacy-item svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.privacy-item h4 {
  color: white;
  font-size: var(--font-size-base);
  margin-bottom: var(--space-xs);
}

.privacy-item p {
  color: rgba(255,255,255,0.7);
  font-size: var(--font-size-sm);
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(170deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
  text-align: center;
}

.cta-section h2 {
  margin-bottom: var(--space-md);
}

.cta-section p {
  margin: 0 auto var(--space-2xl);
  font-size: var(--font-size-lg);
}

/* --- Footer --- */
.footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.7);
  padding: var(--space-2xl) 0;
  text-align: center;
  font-size: var(--font-size-sm);
}

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

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

.footer p {
  color: rgba(255,255,255,0.5);
  margin: var(--space-sm) auto;
}

/* --- Form Page --- */
.form-section {
  padding: var(--space-3xl) 0;
  min-height: calc(100vh - 64px - 100px);
  display: flex;
  align-items: center;
}

.form-wrapper {
  max-width: 640px;
  margin: 0 auto;
}

.form-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.form-header h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
}

.form-header p {
  margin: 0 auto;
}

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

.form-group {
  margin-bottom: var(--space-lg);
}

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

@media (min-width: 640px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}

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

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(45,106,79,0.15);
}

.form-input.error,
.form-textarea.error {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(193,18,31,0.1);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

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

.form-error.visible {
  display: block;
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  margin-top: var(--space-xs);
}

/* Checkbox */
.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.checkbox-group label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  line-height: 1.4;
}

/* Amount input */
.amount-wrapper {
  position: relative;
}

.amount-wrapper .currency-symbol {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-weight: 500;
}

.amount-wrapper .form-input {
  padding-left: 2rem;
}

/* Submit */
.form-submit {
  margin-top: var(--space-xl);
}

.form-submit .btn {
  width: 100%;
}

.btn .spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(0,0,0,0.2);
  border-top-color: #1a1a1a;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn.loading .spinner {
  display: block;
}

.btn.loading .btn-text {
  display: none;
}

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

/* Form messages */
.form-message {
  display: none;
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
}

.form-message.visible {
  display: block;
}

.form-message svg {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
}

.form-message h2 {
  margin-bottom: var(--space-md);
}

.form-message p {
  margin: 0 auto;
}

.form-message.success svg {
  color: var(--color-success);
}

.form-message.error-msg svg {
  color: var(--color-danger);
}

/* Privacy notice below form */
.form-privacy-notice {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-primary-lighter);
  border-radius: var(--radius);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.form-privacy-notice svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.form-privacy-notice p {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Honeypot */
.hp-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* --- Utility --- */
.text-center { text-align: center; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}