/* ─────────────────────────────────────────────
   CPMaster — Modern Minimal Design
   Clean, contemporary aesthetic with professional typography
───────────────────────────────────────────── */

:root {
  /* ─── Color Palette ─── */
  --bg:       #ffffff;
  --bg-alt:   #f9fafb;
  --surface:  #f3f4f6;
  --surface2: #eeeff2;
  --border:   #e5e7eb;
  --border2:  #d1d5db;
  --text:     #111827;
  --text2:    #6b7280;
  --text3:    #9ca3af;
  --accent:   #2563eb;
  --accent-light: #dbeafe;
  --success:  #10b981;
  --warning:  #f59e0b;
  --error:    #ef4444;
  
  /* ─── Spacing & Radius ─── */
  --radius:   8px;
  --radius-sm: 6px;
  --radius-lg: 12px;
  --max-w:    600px;
  
  /* ─── Transitions ─── */
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:       #0f172a;
    --bg-alt:   #1e293b;
    --surface:  #1e293b;
    --surface2: #334155;
    --border:   #475569;
    --border2:  #64748b;
    --text:     #f1f5f9;
    --text2:    #cbd5e1;
    --text3:    #94a3b8;
    --accent:   #3b82f6;
    --accent-light: #1e3a8a;
  }
}

/* ─────────────────────────────
   RESET & BASE
───────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.3s ease;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

h1 { font-size: clamp(32px, 6vw, 48px); font-weight: 700; }
h2 { font-size: 28px; }
h3 { font-size: 20px; }

/* Links */
a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}
a:hover { opacity: 0.8; }

/* ─────────────────────────────
   NAV
───────────────────────────────── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  gap: 12px;
}

@media (prefers-color-scheme: dark) {
  nav {
    background: rgba(15, 23, 42, 0.95);
  }
}

.logo {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.8px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0;
  color: #ffffff;
}

.logo span {
  color: var(--accent);
  font-weight: 800;
}

.logo {
  background: linear-gradient(135deg, var(--text) 0%, var(--text) 30%, var(--accent) 30%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo span {
  -webkit-text-fill-color: var(--accent);
}

.nav-tabs {
  display: flex;
  background: transparent;
  gap: 4px;
  flex: 1;
  margin-left: 20px;
}

.nav-tab {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--text2);
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
  white-space: nowrap;
}

.nav-tab:hover {
  color: var(--text);
  background: var(--surface);
}

.nav-tab.active {
  background: var(--accent);
  color: #ffffff;
}

.lang-switcher {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
  margin-left: auto;
}

.lang-btn {
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: var(--transition);
}

.lang-btn:hover {
  color: var(--text);
  border-color: var(--text2);
}

.lang-btn.active {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

/* ─────────────────────────────
   MAIN & PAGES
───────────────────────────────── */
main {
  padding-top: 120px;
  min-height: 100vh;
}

.page {
  display: none;
}

.page.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ─────────────────────────────
   WELCOME SECTION
───────────────────────────────── */
.welcome-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 70px);
}

.welcome-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  max-width: 480px;
  animation: slideUp 0.4s ease;
}

.welcome-title {
  font-size: 32px;
  margin-bottom: 16px;
  font-weight: 700;
}

.welcome-subtitle {
  font-size: 16px;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: 12px;
}

/* ─────────────────────────────
   HERO
───────────────────────────────── */
.hero {
  padding: 60px 20px 40px;
  max-width: var(--max-w);
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

h1 {
  margin-bottom: 16px;
  line-height: 1.15;
}

h1 em {
  font-style: normal;
  color: var(--accent);
  font-weight: 700;
}

.hero-sub {
  color: var(--text2);
  font-size: 16px;
  font-weight: 400;
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ─────────────────────────────
   CALCULATOR
───────────────────────────────── */
.calc-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 24px 16px 80px;
}

.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-top: 32px;
  margin-bottom: 32px;
}

.step-dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text3);
  transition: var(--transition);
  position: relative;
  z-index: 1;
  font-family: 'Poppins', sans-serif;
}

.step-dot:hover {
  border-color: var(--text2);
}

.step-dot.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.step-dot.done {
  background: var(--success);
  border-color: var(--success);
  color: #ffffff;
}

.step-line {
  flex: 1;
  height: 2px;
  background: var(--border);
  max-width: 60px;
}

.calc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.block-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 8px;
}

.question-title {
  font-weight: 600;
  font-size: 18px;
  margin-bottom: 24px;
  line-height: 1.35;
}

.question-input {
  margin-bottom: 4px;
}

.val-error {
  color: var(--error);
  font-size: 13px;
  margin-top: 8px;
  font-weight: 500;
}

.calc-nav {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

/* ─────────────────────────────
   FORM ELEMENTS
───────────────────────────────── */
.form-select,
.form-input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 11px 13px;
  color: var(--text);
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

.form-select:hover,
.form-input:hover {
  border-color: var(--border2);
}

.form-select:focus,
.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.select-wrap {
  position: relative;
}

.select-wrap::after {
  content: '↓';
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text3);
  pointer-events: none;
  font-size: 12px;
  font-weight: 600;
}

.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 9px 15px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text2);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}

.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.chip.active {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.chip.selected {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.toggle-group {
  display: flex;
  gap: 8px;
  background: var(--surface2);
  padding: 4px;
  border-radius: var(--radius);
}

.toggle-btn,
.toggle-opt {
  flex: 1;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
}

.toggle-btn:hover,
.toggle-opt:hover {
  color: var(--text);
}

.toggle-btn.active,
.toggle-opt.active {
  background: var(--bg);
  color: var(--accent);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.range-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.range-display {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 8px;
  width: 100%;
}

.range-container {
  display: flex;
  align-items: center;
  gap: 0;
  width: 100%;
}

.range-input,
input[type=range] {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--surface2);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.range-input::-webkit-slider-thumb,
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.range-input::-webkit-slider-thumb:active,
input[type=range]::-webkit-slider-thumb:active {
  box-shadow: 0 2px 12px rgba(37, 99, 235, 0.4);
  transform: scale(1.1);
}

.range-input::-webkit-slider-thumb:hover,
input[type=range]::-webkit-slider-thumb:hover {
  box-shadow: 0 2px 12px rgba(37, 99, 235, 0.4);
}

.range-input::-moz-range-thumb,
input[type=range]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.range-input::-moz-range-thumb:active,
input[type=range]::-moz-range-thumb:active {
  box-shadow: 0 2px 12px rgba(37, 99, 235, 0.4);
  transform: scale(1.1);
}

.range-input::-moz-range-thumb:hover,
input[type=range]::-moz-range-thumb:hover {
  box-shadow: 0 2px 12px rgba(37, 99, 235, 0.4);
}

.range-input::-moz-range-track,
input[type=range]::-moz-range-track {
  background: transparent;
  border: none;
}

.range-input::-moz-range-progress,
input[type=range]::-moz-range-progress {
  background: var(--accent);
  height: 8px;
  border-radius: 4px;
}

.range-val {
  font-family: 'Poppins', sans-serif;
  font-size: 20px;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
  text-align: right;
}

.range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text3);
  margin-top: 4px;
}

/* ─────────────────────────────
   BUTTONS
───────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  text-decoration: none;
  outline: none;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  flex: 1;
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 600;
  min-height: 48px;
  border-radius: 24px;
}

.btn-primary:hover:not(:disabled) {
  background: #1d4ed8;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
  flex: 1;
}

.btn-secondary:hover:not(:disabled) {
  background: var(--surface);
  border-color: var(--border2);
}

.btn-ghost {
  background: transparent;
  color: var(--text2);
  border-color: transparent;
  padding: 12px 20px;
  display: inline-flex;
}

.btn-ghost:hover:not(:disabled) {
  color: var(--text);
  background: var(--surface);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

/* ─────────────────────────────
   RESULTS
───────────────────────────────── */
.results-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 16px 80px;
}

.results-label {
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 20px;
}

.res-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  margin-bottom: 24px;
  text-align: center;
}

/* Results Card Styles */
.res-total-card {
  background: linear-gradient(135deg, var(--accent) 0%, #1d4ed8 100%);
  border: none;
  color: #ffffff;
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
}

.res-total-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.9;
  margin-bottom: 12px;
}

.res-total-val {
  font-family: 'Poppins', sans-serif;
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 12px;
}

.res-total-range {
  font-size: 14px;
  margin-bottom: 16px;
  opacity: 0.95;
}

.res-range-sep {
  margin: 0 8px;
  opacity: 0.8;
}

.res-total-annual {
  font-size: 14px;
  opacity: 0.9;
}

/* Metrics Card */
.res-metrics-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  margin-bottom: 24px;
}

.res-metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.res-metric-item {
  text-align: center;
}

.res-metric-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.res-metric-val {
  font-family: 'Poppins', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.res-metric-val.positive {
  color: var(--success);
}

.res-metric-val.negative {
  color: var(--warning);
}

.res-metric-sub {
  font-size: 12px;
  color: var(--text2);
}

.res-card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  text-align: left;
}

/* Sources Card */
.res-sources-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  margin-bottom: 24px;
}

.res-breakdown {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.res-source-row {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
}

.res-source-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.res-source-icon {
  font-weight: 600;
  color: var(--accent);
  min-width: 16px;
}

.res-source-name {
  flex: 1;
  font-weight: 500;
  text-align: left;
}

.res-source-amount {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  color: var(--accent);
}

.res-source-bar-wrap {
  width: 100%;
  height: 6px;
  background: var(--surface2);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 8px;
}

.res-source-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, #1d4ed8 100%);
  transition: width 0.3s ease;
}

.res-source-range {
  font-size: 11px;
  color: var(--text3);
  text-align: left;
}

/* Insights Card */
.res-insights-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  margin-bottom: 24px;
}

.res-insights {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.res-insight {
  background: var(--bg);
  border-left: 4px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.5;
}

.res-insight-tip {
  border-left-color: var(--accent);
  background: rgba(37, 99, 235, 0.05);
}

.res-insight-positive {
  border-left-color: var(--success);
  background: rgba(16, 185, 129, 0.05);
}

.res-insight-warning {
  border-left-color: var(--warning);
  background: rgba(245, 158, 11, 0.05);
}

.res-card-title {
  font-size: 13px;
  color: var(--text3);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.res-card-val,
.res-total-val {
  font-family: 'Poppins', sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
}

.res-card-sub {
  font-size: 13px;
  color: var(--text2);
  margin-top: 4px;
}

.res-total,
.res-total-card {
  background: linear-gradient(135deg, var(--accent) 0%, #1d4ed8 100%);
  border: none;
  color: #ffffff;
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius-lg);
}

.res-total .res-card-val,
.res-total-card .res-total-val {
  color: #ffffff;
  font-size: 36px;
}

.res-breakdown {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.res-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  text-align: center;
}

.res-item-label {
  font-size: 11px;
  color: var(--text3);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 4px;
}

.res-item-val {
  font-family: 'Poppins', sans-serif;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.insights-section {
  margin-top: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
}

.insights-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.insight {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  margin-bottom: 8px;
  font-size: 13px;
  line-height: 1.5;
}

.insight:before {
  content: '→ ';
  color: var(--accent);
  font-weight: 600;
}

/* ─────────────────────────────
   TRENDS
───────────────────────────────── */
.trends-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 16px 80px;
}

.trends-filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 32px;
}

.trend-filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.trend-filter-label,
.filter-select {
  font-size: 12px;
  font-weight: 600;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.trend-filter-select,
.filter-select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 9px 11px;
  color: var(--text);
  font-size: 13px;
  font-family: 'Inter', sans-serif;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: var(--transition);
}

.trend-filter-select:hover,
.filter-select:hover {
  border-color: var(--border2);
}

.trend-filter-select:focus,
.filter-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.trends-top-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 16px;
}

.trends-list {
  display: grid;
  gap: 12px;
}

.trend-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

.trend-item:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.trend-rank {
  font-family: 'Poppins', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  min-width: 30px;
}

.trend-info {
  flex: 1;
}

.trend-title,
.trend-title-text {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 4px;
}

.trend-meta {
  display: flex;
  gap: 12px;
  font-size: 12px;
  color: var(--text3);
  flex-wrap: wrap;
}

.trend-channel {
  color: var(--text2);
  font-weight: 500;
}

.trend-category {
  background: var(--accent-light);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
  text-transform: capitalize;
}

.trend-stats {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.trend-views {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  color: var(--accent);
  font-size: 16px;
}

.trend-likes {
  font-size: 12px;
  color: var(--text3);
}

.trend-thumb {
  width: 80px;
  height: 80px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--surface2) 100%);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.trend-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.trend-thumb-inner {
  font-size: 28px;
  text-align: center;
}

/* ─────────────────────────────
   RESPONSIVE
───────────────────────────────── */
@media (max-width: 768px) {
  nav {
    padding: 12px 16px;
  }

  .nav-tabs {
    margin-left: 12px;
  }

  .nav-tab {
    padding: 7px 12px;
    font-size: 12px;
  }

  .lang-btn {
    padding: 5px 9px;
    font-size: 11px;
  }

  main {
    padding-top: 80px;
  }

  .hero {
    padding: 40px 16px 32px;
  }

  h1 {
    font-size: 28px;
  }

  .calc-card {
    padding: 20px 16px;
  }

  .question-title {
    font-size: 16px;
    margin-bottom: 20px;
  }

  .trends-filters {
    grid-template-columns: 1fr;
  }

  .step-indicator {
    margin-bottom: 24px;
  }

  .step-dot {
    width: 32px;
    height: 32px;
    font-size: 12px;
  }

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

  .btn {
    padding: 10px 16px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 14px;
  }

  nav {
    flex-wrap: wrap;
    padding: 10px;
    gap: 8px;
  }

  main {
    padding-top: 140px;
  }

  .logo {
    font-size: 16px;
    order: 1;
  }

  .nav-tabs {
    order: 3;
    flex-basis: 100%;
    margin: 0;
  }

  .lang-switcher {
    order: 2;
  }

  h1 {
    font-size: 24px;
  }

  .calc-container,
  .results-container,
  .trends-container {
    padding: 24px 12px 60px;
  }

  .calc-card {
    padding: 16px 12px;
    border-radius: 8px;
  }

  .res-breakdown {
    grid-template-columns: 1fr;
  }

  .btn {
    padding: 9px 14px;
    font-size: 12px;
  }

  .calc-nav {
    flex-direction: column-reverse;
  }

  .trend-item {
    flex-direction: column;
    text-align: center;
  }

  .trend-meta {
    justify-content: center;
  }

  .trend-thumb {
    width: 50px;
    height: 50px;
  }
}

@media (max-width: 360px) {
  .lang-switcher { display: none; }
  h1 { font-size: 24px; }
}

/* ─────────────────────────────
   UTILITY
───────────────────────────────── */
.text-center { text-align: center; }
.text-muted { color: var(--text2); }
.text-sm { font-size: 13px; }
.text-xs { font-size: 11px; }
.mt { margin-top: 12px; }
.mb { margin-bottom: 12px; }
.gap-md { gap: 12px; }

.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Print Styles */
@media print {
  nav,
  .calc-nav,
  .trends-filters {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .calc-card,
  .res-card {
    page-break-inside: avoid;
  }
}
/* Nav her zaman üstte, overlay yapmasın */
nav#nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}

/* Mobilde main padding-top ayarı */
@media (max-width: 768px) {
  main {
    padding-top: calc( var(--nav-height, 60px) + 20px ) !important;
  }
}

/* opsiyonel: CSS değişkeni ile top bar yüksekliğini JS ile senkronize edebilirsin */