/* === FileXify - Modern Youthful Design === */

:root {
  --bg: #f5f7fb;
  --card-bg: #ffffff;
  --text: #1a1b2f;
  --text-light: #7c7f93;
  --primary: #6c5ce7;
  --primary-glow: rgba(108, 92, 231, 0.15);
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 52px;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overscroll-behavior: none;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 480px) {
  .container { padding: 0 16px; }
}

/* === HEADER === */
.header {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.04);
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text);
  letter-spacing: -0.5px;
  gap: 8px;
}

.logo-img {
  display: block;
  height: 32px;
  width: auto;
  object-fit: contain;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #6c5ce7, #a29bfe);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: white;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3);
}

.lang-selector { position: relative; }

.lang-btn {
  background: var(--bg);
  border: 1px solid rgba(0,0,0,0.04);
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--text);
  transition: var(--transition);
  white-space: nowrap;
}

.lang-btn:hover { background: #eef0f5; }
.lang-btn:active { transform: scale(0.96); }

.lang-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--card-bg);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.1);
  min-width: 160px;
  z-index: 50;
  margin-top: 6px;
  padding: 6px;
  animation: fadeIn 0.15s ease;
}

.lang-dropdown.show { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.lang-option {
  display: block;
  padding: 10px 14px;
  text-decoration: none;
  color: var(--text);
  font-size: 0.85rem;
  border-radius: 8px;
  transition: var(--transition);
}

.lang-option:hover { background: var(--bg); }
.lang-option:active { background: var(--primary-glow); }
.lang-option.active { color: var(--primary); font-weight: 600; background: var(--primary-glow); }

/* === HERO === */
.hero {
  padding: 60px 0 44px;
  text-align: center;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108,92,231,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-title {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 14px;
  letter-spacing: -1px;
  line-height: 1.2;
  position: relative;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #6c5ce7, #fd79a8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.7;
  position: relative;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-top: 24px;
  position: relative;
}

.hero-stat { text-align: center; }

.hero-stat-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  display: block;
  line-height: 1.2;
}

.hero-stat-lbl {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 500;
}

/* === CATEGORY === */
.category { margin-bottom: 36px; }

.category-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cat-icon { font-size: 0.9rem; }

/* === TOOLS GRID - ilovepdf style === */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.tool-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px 14px 18px;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  transition: var(--transition);
  cursor: pointer;
  border: 1.5px solid rgba(0,0,0,0.04);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-color);
  opacity: 0;
  transition: var(--transition);
}

.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.tool-card:hover::before { opacity: 1; }

.tool-card:active {
  transform: translateY(-2px) scale(0.97);
}

.tool-card-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(0,0,0,0.04);
}

.tool-card:hover .tool-card-icon {
  transform: scale(1.1) rotate(-3deg);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.tool-card-title {
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.3;
}

.tool-card-arrow {
  position: absolute;
  top: 10px;
  right: 12px;
  font-size: 0.7rem;
  color: var(--text-light);
  opacity: 0;
  transform: translateX(-6px);
  transition: var(--transition);
}

.tool-card:hover .tool-card-arrow {
  opacity: 1;
  transform: translateX(0);
}

.tool-badge {
  font-size: 0.62rem;
  padding: 2px 8px;
  border-radius: 20px;
  background: linear-gradient(135deg, #6c5ce7, #a29bfe);
  color: white;
  font-weight: 600;
  letter-spacing: 0.3px;
}

/* === FEATURES === */
.features { padding: 48px 0; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.feature-card {
  text-align: center;
  padding: 28px 20px;
  border-radius: var(--radius);
  background: var(--card-bg);
  border: 1.5px solid rgba(0,0,0,0.04);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.feature-card:active { transform: scale(0.97); }
.feature-icon { font-size: 1.8rem; margin-bottom: 12px; display: block; }
.feature-card h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 6px; }
.feature-card p { font-size: 0.85rem; color: var(--text-light); line-height: 1.6; }

/* === TOOL PAGE === */
.tool-page { flex: 1; padding: 24px 0; }

.breadcrumb {
  font-size: 0.78rem;
  color: var(--text-light);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.breadcrumb::-webkit-scrollbar { display: none; }
.breadcrumb a { color: var(--primary); text-decoration: none; font-weight: 500; flex-shrink: 0; }
.breadcrumb a:hover { text-decoration: underline; }

.tool-header { text-align: center; margin-bottom: 24px; }

.tool-header-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

.tool-title { font-size: 1.6rem; font-weight: 800; margin-bottom: 8px; letter-spacing: -0.5px; }

.tool-desc {
  color: var(--text-light);
  font-size: 0.9rem;
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.6;
}

/* === UPLOAD ZONE === */
.tool-area {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 36px 20px;
  text-align: center;
  margin-bottom: 28px;
  box-shadow: var(--shadow);
  border: 1.5px solid rgba(0,0,0,0.04);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.upload-zone {
  border: 2px dashed #dce0e8;
  border-radius: var(--radius);
  padding: 40px 20px;
  cursor: pointer;
  transition: var(--transition);
}

.upload-zone:active {
  background: linear-gradient(135deg, rgba(108,92,231,0.06), rgba(162,155,254,0.06));
}

.upload-zone:hover {
  border-color: var(--primary);
  background: linear-gradient(135deg, rgba(108,92,231,0.03), rgba(162,155,254,0.03));
}

.upload-icon { font-size: 2.6rem; margin-bottom: 12px; display: block; }

.upload-zone h3 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }

.upload-zone p { color: var(--text-light); margin-bottom: 16px; font-size: 0.85rem; }

/* === BUTTONS === */
.btn {
  padding: 12px 28px;
  border: none;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-block;
  min-height: 44px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background: linear-gradient(135deg, #6c5ce7, #a29bfe);
  color: white;
  box-shadow: 0 4px 16px rgba(108,92,231,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(108,92,231,0.4);
}
.btn-primary:active {
  box-shadow: 0 2px 8px rgba(108,92,231,0.2);
}

.btn-success {
  background: linear-gradient(135deg, #00b894, #55efc4);
  color: white;
  box-shadow: 0 4px 16px rgba(0,184,148,0.3);
}
.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,184,148,0.4);
}

.btn-secondary {
  background: #f0f1f6;
  color: var(--text);
  margin-left: 10px;
}
.btn-secondary:hover { background: #e4e6ef; transform: translateY(-2px); }
.btn-secondary:active { background: #d8dae5; }

/* === UPLOAD PROGRESS === */
.upload-progress { padding: 36px 20px; }

.spinner {
  width: 40px; height: 40px;
  border: 3px solid #eef0f5;
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto 14px;
}

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

.upload-progress p { color: var(--text-light); font-weight: 500; font-size: 0.9rem; }

/* === RESULT === */
.result-area { padding: 28px 20px; }

.result-icon { font-size: 2.6rem; margin-bottom: 10px; display: block; }

.result-area h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; }

/* === CONTROLS === */
.tool-controls {
  margin-top: 18px;
  padding: 18px;
  background: #f8f9fc;
  border-radius: var(--radius-sm);
  text-align: left;
}

.control-group { margin-bottom: 12px; }
.control-group:last-child { margin-bottom: 0; }

.control-group label {
  font-size: 0.82rem;
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
  color: var(--text);
}

.control-group input[type="range"] {
  width: 100%;
  accent-color: var(--primary);
}

.control-group select,
.control-group input[type="number"] {
  padding: 10px 12px;
  border: 1.5px solid #dce0e8;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.88rem;
  width: 100%;
  background: white;
  transition: var(--transition);
}

.control-group select:focus,
.control-group input[type="number"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.control-group.row { display: flex; gap: 12px; }
.control-group.row > div { flex: 1; }

/* === HOWTO === */
.howto { margin-bottom: 36px; max-width: 640px; margin-left: auto; margin-right: auto; }

.howto h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.step {
  background: var(--card-bg);
  padding: 20px 16px;
  border-radius: var(--radius);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  border: 1.5px solid rgba(0,0,0,0.04);
  transition: var(--transition);
}

.step:hover { box-shadow: var(--shadow); transform: translateY(-2px); }

.step-num {
  background: linear-gradient(135deg, #6c5ce7, #a29bfe);
  color: white;
  width: 30px; height: 30px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.82rem;
  flex-shrink: 0;
}

.step p { font-size: 0.85rem; color: var(--text-light); padding-top: 3px; line-height: 1.5; }

/* === MORE TOOLS === */
.more-tools { margin-bottom: 36px; }

.more-tools h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tools-grid.mini { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 8px; }
.tool-card.mini { padding: 14px 10px; border-radius: 14px; gap: 8px; }
.tool-card.mini .tool-card-icon { width: 42px; height: 42px; font-size: 1.1rem; border-radius: 12px; }
.tool-card.mini .tool-card-title { font-size: 0.75rem; }

/* === FOOTER === */
.footer {
  background: var(--card-bg);
  border-top: 1px solid rgba(0,0,0,0.04);
  padding: 20px 0;
  text-align: center;
  color: var(--text-light);
  font-size: 0.8rem;
  margin-top: auto;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* ========================= */
/* === CALCULATOR PAGES === */
/* ========================= */

.calc-page { flex: 1; padding: 24px 0; }

.calc-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 24px;
  align-items: start;
}

.calc-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1.5px solid rgba(0,0,0,0.04);
  overflow: hidden;
}

.calc-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 24px 24px 0;
}

.calc-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.calc-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.calc-desc {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: 2px;
}

.calc-body { padding: 18px 24px 24px; }

/* --- Input Fields --- */
.calc-fields {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.field-row {
  display: flex;
  gap: 12px;
}

.field-grp {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.field-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: #555;
}

.field-input-wrapper {
  position: relative;
  display: flex;
}

.field-input {
  width: 100%;
  padding: 10px 12px;
  border: 2px solid #e8e8f0;
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 600;
  outline: none;
  transition: var(--transition);
  background: #fafbfc;
  -moz-appearance: textfield;
}

.field-input::-webkit-outer-spin-button,
.field-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.field-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glass);
  background: #fff;
}

.field-unit {
  position: absolute;
  right: 2px;
  top: 2px;
  bottom: 2px;
  border: none;
  background: transparent;
  padding: 0 10px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #666;
  cursor: pointer;
  border-left: 1px solid #e8e8f0;
  border-radius: 0 8px 8px 0;
  outline: none;
  font-family: inherit;
}

.field-unit:hover { background: #f5f5fa; }

.field-prefix {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  font-weight: 600;
  color: #999;
  pointer-events: none;
}

/* --- Slider --- */
.field-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: #e8e8f0;
  border-radius: 3px;
  outline: none;
  margin: 4px 0;
}

.field-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  transition: var(--transition);
}

.field-slider::-webkit-slider-thumb:active {
  transform: scale(1.2);
}

.field-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.tip-pct {
  font-weight: 800;
  color: var(--accent);
}

/* Tip preset buttons */
.tip-presets {
  display: flex;
  gap: 6px;
  margin-top: 2px;
}

.tip-preset {
  flex: 1;
  padding: 10px 0;
  border: 2px solid #e8e8f0;
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  color: #555;
  font-family: inherit;
  transition: var(--transition);
  min-height: 40px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.tip-preset:active {
  transform: scale(0.95);
}

.tip-preset:hover {
  border-color: var(--accent);
  background: var(--accent-glass);
  color: var(--accent);
}

.tip-preset.active {
  border-color: var(--accent);
  background: var(--accent-glass);
  color: var(--accent);
}

/* Split control */
.split-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.split-btn {
  width: 44px;
  height: 44px;
  border: 2px solid #e8e8f0;
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  font-size: 1.3rem;
  font-weight: 700;
  color: #555;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  transition: var(--transition);
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.split-btn:active {
  transform: scale(0.92);
  border-color: var(--accent);
}

.split-btn:hover {
  border-color: var(--accent);
  background: var(--accent-glass);
  color: var(--accent);
}

.split-input {
  text-align: center;
  width: 64px;
}

/* --- BMI Result --- */
.bmi-result {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.bmi-ring {
  position: relative;
  width: 160px;
  height: 160px;
}

.bmi-svg { width: 100%; height: 100%; }

.bmi-ring-bg {
  fill: none;
  stroke: #f0f0f5;
  stroke-width: 12;
}

.bmi-ring-fill {
  fill: none;
  stroke: #00b894;
  stroke-width: 12;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.5s ease, stroke 0.3s ease;
  transform: rotate(-90deg);
  transform-origin: 90px 90px;
}

.bmi-ring-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.bmi-ring-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  transition: color 0.3s ease;
}

.bmi-ring-label {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 600;
  margin-top: 2px;
}

.bmi-status {
  font-size: 1rem;
  font-weight: 700;
  margin-top: 10px;
  transition: color 0.3s ease;
}

.bmi-bar {
  width: 100%;
  max-width: 280px;
  margin-top: 16px;
}

.bmi-bar-track {
  height: 8px;
  background: linear-gradient(90deg, #f39c12 0%, #00b894 33%, #e67e22 67%, #e74c3c 100%);
  border-radius: 4px;
  position: relative;
  overflow: visible;
}

.bmi-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s ease, background 0.3s ease;
  position: relative;
  max-width: 100%;
}

.bmi-bar-dot {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #00b894;
  border: 3px solid #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  transition: left 0.5s ease, background 0.3s ease;
  z-index: 2;
}

.bmi-bar-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  color: var(--text-light);
  margin-top: 4px;
  padding: 0 2px;
}

.bmi-bar-text {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-light);
  margin-top: 6px;
  font-weight: 500;
}

/* --- Tip Result --- */
.tip-result {
  margin-top: 20px;
  background: #f8f9fc;
  border-radius: 14px;
  padding: 18px;
}

.tip-big {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.tip-big-item {
  text-align: center;
  flex: 1;
}

.tip-big-num {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}

.tip-big-lbl {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 500;
}

.tip-big-divider {
  width: 1px;
  height: 44px;
  background: #e0e0ea;
}

.tip-detail {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid #e8e8f0;
}

.tip-detail-row {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  font-size: 0.85rem;
  color: #555;
}

.tip-detail-val {
  font-weight: 700;
  color: var(--accent);
}

/* --- Loan Result --- */
.loan-result { margin-top: 20px; }

.loan-main {
  text-align: center;
  padding: 18px;
  background: linear-gradient(135deg, var(--accent-glass), transparent);
  border-radius: 14px;
  margin-bottom: 16px;
}

.loan-main-num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}

.loan-main-lbl {
  font-size: 0.78rem;
  color: var(--text-light);
  font-weight: 500;
}

.loan-breakdown {
  display: flex;
  gap: 16px;
  align-items: center;
}

.loan-pie {
  position: relative;
  width: 110px;
  height: 110px;
  flex-shrink: 0;
}

.loan-svg { width: 100%; height: 100%; }

.loan-pie-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.loan-pie-pct {
  font-size: 1rem;
  font-weight: 800;
  color: #e74c3c;
  line-height: 1;
}

.loan-pie-lbl {
  font-size: 0.6rem;
  color: var(--text-light);
  font-weight: 500;
}

.loan-stats {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.loan-stat {
  background: #f8f9fc;
  border-radius: 10px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.loan-stat-num {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.loan-stat-lbl {
  font-size: 0.7rem;
  color: var(--text-light);
  font-weight: 500;
}

/* ========================= */
/* === CALCULATOR SIDEBAR === */
/* ========================= */

.calc-sidebar {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.sidebar-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  border: 1.5px solid rgba(0,0,0,0.04);
}

.sidebar-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.sidebar-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-step {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.sidebar-step-num {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: linear-gradient(135deg, #6c5ce7, #a29bfe);
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-step p {
  font-size: 0.8rem;
  color: var(--text-light);
  line-height: 1.5;
  padding-top: 1px;
}

.sidebar-tools {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebar-tool {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  text-decoration: none;
  transition: var(--transition);
  border: 1.5px solid rgba(0,0,0,0.04);
}

.sidebar-tool:active {
  background: var(--accent-glass);
  transform: scale(0.97);
}

.sidebar-tool:hover {
  background: var(--accent-glass);
  border-color: var(--accent);
  transform: translateX(3px);
}

.sidebar-tool-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.sidebar-tool-name {
  flex: 1;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
}

.sidebar-tool-arrow {
  font-size: 0.7rem;
  color: var(--text-light);
  opacity: 0;
  transition: var(--transition);
}

.sidebar-tool:hover .sidebar-tool-arrow {
  opacity: 1;
  transform: translateX(3px);
}

/* ========================= */
/* === RESPONSIVE === */
/* ========================= */

/* Tablet */
@media (max-width: 900px) {
  .calc-layout {
    grid-template-columns: 1fr;
  }
  .calc-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}

/* Small tablet / large phone */
@media (max-width: 768px) {
  .hero-title { font-size: 1.8rem; }
  .hero { padding: 44px 0 32px; }
  .hero-stats { gap: 20px; }
  .hero-stat-num { font-size: 1.3rem; }
  .tools-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
  .tool-card { padding: 20px 12px; border-radius: 16px; gap: 8px; }
  .tool-card-icon { width: 48px; height: 48px; font-size: 1.2rem; }
  .steps { grid-template-columns: 1fr; gap: 8px; }
  .tool-title { font-size: 1.5rem; }
  .calc-sidebar { grid-template-columns: 1fr; }
  .loan-breakdown { flex-direction: column; align-items: center; }
  .loan-stats { width: 100%; }
  .header { --header-h: 48px; }
  .logo-img { height: 28px; }
}

/* Phone */
@media (max-width: 480px) {
  .hero-title { font-size: 1.5rem; letter-spacing: -0.5px; margin-bottom: 10px; }
  .hero-subtitle { font-size: 0.92rem; }
  .hero { padding: 36px 0 28px; }
  .hero::before { width: 400px; height: 400px; }
  .hero-stats { gap: 16px; margin-top: 18px; }
  .hero-stat-num { font-size: 1.1rem; }
  .hero-stat-lbl { font-size: 0.65rem; }
  .tools-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .tool-card { padding: 16px 10px; border-radius: 14px; gap: 6px; }
  .tool-card-icon { width: 44px; height: 44px; font-size: 1.1rem; border-radius: 12px; }
  .tool-card-title { font-size: 0.75rem; }

  .tool-page { padding: 16px 0; }
  .tool-area { padding: 24px 16px; border-radius: 16px; }
  .upload-zone { padding: 28px 16px; }
  .upload-icon { font-size: 2.2rem; }
  .upload-zone h3 { font-size: 0.92rem; }
  .upload-zone p { font-size: 0.8rem; }
  .tool-header-icon { width: 52px; height: 52px; font-size: 1.4rem; }
  .tool-title { font-size: 1.3rem; }
  .tool-desc { font-size: 0.82rem; }
  .breadcrumb { font-size: 0.72rem; margin-bottom: 12px; }
  .tool-controls { padding: 14px; }
  .control-group.row { flex-direction: column; gap: 10px; }

  .howto { margin-bottom: 28px; }
  .step { padding: 14px 12px; gap: 8px; }
  .step-num { width: 26px; height: 26px; font-size: 0.72rem; }
  .step p { font-size: 0.8rem; }

  .more-tools { margin-bottom: 28px; }
  .tools-grid.mini { grid-template-columns: repeat(3, 1fr); gap: 6px; }
  .tool-card.mini { padding: 10px 6px; border-radius: 12px; }
  .tool-card.mini .tool-card-icon { width: 36px; height: 36px; font-size: 0.9rem; border-radius: 10px; }
  .tool-card.mini .tool-card-title { font-size: 0.65rem; }

  .calc-page { padding: 16px 0; }
  .calc-card-header { padding: 18px 18px 0; gap: 10px; }
  .calc-icon { width: 40px; height: 40px; font-size: 1.1rem; border-radius: 12px; }
  .calc-title { font-size: 1.05rem; }
  .calc-desc { font-size: 0.75rem; }
  .calc-body { padding: 14px 18px 20px; }
  .field-row { flex-direction: column; gap: 10px; }
  .field-input { padding: 10px 10px; font-size: 0.95rem; }
  .field-label { font-size: 0.72rem; }

  .bmi-ring { width: 140px; height: 140px; }
  .bmi-ring-num { font-size: 1.7rem; }
  .bmi-status { font-size: 0.9rem; }
  .bmi-bar { max-width: 100%; }

  .tip-big-num { font-size: 1.3rem; }
  .tip-preset { font-size: 0.75rem; padding: 8px 0; min-height: 36px; }
  .split-btn { width: 40px; height: 40px; font-size: 1.1rem; }

  .loan-main-num { font-size: 1.6rem; }
  .loan-pie { width: 90px; height: 90px; }
  .loan-stat-num { font-size: 1rem; }

  .btn { padding: 12px 20px; font-size: 0.85rem; }
  .upload-progress { padding: 24px 16px; }
  .result-area { padding: 20px 16px; }
  .result-area .btn {
    display: block;
    width: 100%;
    margin: 0 0 8px 0 !important;
    text-align: center;
  }
}

/* Small phone (320px - iPhone SE) */
@media (max-width: 380px) {
  .tools-grid { gap: 6px; }
  .tool-card { padding: 12px 8px; }
  .tool-card-icon { width: 38px; height: 38px; font-size: 0.95rem; }
  .tool-card-title { font-size: 0.68rem; }
  .tools-grid.mini { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 1.3rem; }
  .hero-stats { gap: 12px; }
  .hero-stat-num { font-size: 1rem; }
  .container { padding: 0 12px; }
}

/* === Footer info bar === */
.footer-info {
  padding: 24px 0;
  border-top: 1px solid #e8e8e8;
  margin-top: 36px;
}

.info-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  font-size: 0.82rem;
  color: #666;
}

.info-row span {
  white-space: nowrap;
}

@media (max-width: 600px) {
  .footer-info { padding: 20px 0; margin-top: 28px; }
  .info-row { gap: 12px; font-size: 0.78rem; }
  .info-row span {
    white-space: normal;
    text-align: center;
    width: 100%;
  }
}

/* === Utility: safe area padding for notched phones === */
@media (display-mode: standalone) {
  .header { padding-top: env(safe-area-inset-top); }
  .footer { padding-bottom: env(safe-area-inset-bottom); }
}

/* Percentage calculator tabs */
.pct-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
  background: #f0f1f6;
  padding: 4px;
  border-radius: 10px;
}
.pct-tab {
  flex: 1;
  padding: 8px 6px;
  border: none;
  border-radius: 8px;
  background: transparent;
  font-size: 0.75rem;
  font-weight: 600;
  color: #666;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.pct-tab.active {
  background: #fff;
  color: var(--text);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.pct-tab:hover { color: var(--text); }
.pct-tab:active { transform: scale(0.96); }

/* Date input styling */
input[type="date"].field-input {
  min-height: 44px;
  padding: 10px 12px;
  font-size: 0.95rem;
  font-weight: 500;
  -webkit-appearance: none;
  appearance: none;
}

/* === HEADER: 3-column layout with inline filter === */
.header .container {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 0;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  margin-right: 12px;
  font-size: 1rem;
  gap: 0;
}

.logo-img {
  display: block;
  height: 96px;
  width: auto;
  object-fit: contain;
}

.header-center {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.nav {
  flex-shrink: 0;
  margin-left: 8px;
}

/* Inline category filter tabs in header */
.cat-filter {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 0;
  white-space: nowrap;
}

.cat-filter::-webkit-scrollbar { display: none; }

.cat-filter-tab {
  flex-shrink: 0;
  padding: 5px 12px;
  border: none;
  border-radius: 16px;
  background: transparent;
  font-size: 0.78rem;
  font-weight: 500;
  color: #666;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s ease;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.cat-filter-tab:hover {
  background: var(--primary-glow);
  color: var(--primary);
}

.cat-filter-tab:active {
  transform: scale(0.95);
}

.cat-filter-tab.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}

@media (max-width: 768px) {
  .header .container { height: 56px; padding: 0 16px; }
  .logo-img { height: 76px; }
  .logo { margin-right: 8px; }
  .cat-filter-tab { padding: 4px 10px; font-size: 0.72rem; }
}

@media (max-width: 480px) {
  .header .container { height: 50px; padding: 0 12px; }
  .logo-img { height: 60px; }
  .logo { margin-right: 6px; }
  .cat-filter { gap: 3px; }
  .cat-filter-tab { padding: 3px 8px; font-size: 0.65rem; }
}

/* Filter: hide categories */
.category.hidden { display: none !important; }

/* Hot badge */
.hot-badge {
  background: linear-gradient(135deg, #ff6b35, #f7931e) !important;
  color: #fff !important;
  font-size: 0.65rem !important;
  padding: 1px 6px !important;
  border-radius: 10px !important;
  font-weight: 700 !important;
  margin-left: auto;
  animation: pulse-hot 2s ease-in-out infinite;
}
@keyframes pulse-hot {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}
/* Trust Bar */
.trust-bar {
  display: flex;
  gap: 20px;
  justify-content: center;
  padding: 10px 0 16px;
  flex-wrap: wrap;
}
.trust-bar span {
  font-size: 0.78rem;
  color: #666;
  background: #f0f2f8;
  padding: 6px 14px;
  border-radius: 20px;
}
@media (max-width: 480px) {
  .trust-bar { gap: 8px; }
  .trust-bar span { font-size: 0.7rem; padding: 4px 10px; }
}

/* Related Tools */
.related-tools {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid #eee;
}
.related-tools h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text);
}
.related-grid {
  grid-template-columns: repeat(4, 1fr) !important;
}
@media (max-width: 768px) {
  .related-grid { grid-template-columns: repeat(2, 1fr) !important; }
}
@media (max-width: 480px) {
  .related-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 8px; }
}
/* === SEARCH BAR === */
.search-box {
  display: flex;
  align-items: center;
  margin: 0 16px;
  flex: 1;
  max-width: 320px;
}
.search-input {
  width: 100%;
  padding: 7px 14px;
  border: 2px solid #e0e0e8;
  border-radius: 10px;
  font-size: 0.82rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: var(--transition);
}
.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.search-input::placeholder { color: #aaa; }
@media (max-width: 768px) {
  .search-box { max-width: 200px; margin: 0 8px; }
  .search-input { font-size: 0.75rem; padding: 6px 10px; }
}
@media (max-width: 480px) {
  .search-box { max-width: 140px; margin: 0 4px; }
  .search-input { font-size: 0.7rem; padding: 5px 8px; }
}

/* No results */
.no-results {
  text-align: center;
  padding: 60px 20px;
  font-size: 1.2rem;
  color: var(--text-light);
}

/* === DEVELOPER TOOLS === */
.dev-tool {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.dev-tool-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.dev-editor-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 768px) {
  .dev-editor-row { grid-template-columns: 1fr; }
}
.dev-editor-pane {
  display: flex;
  flex-direction: column;
}
.dev-editor-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.dev-textarea {
  width: 100%;
  min-height: 200px;
  padding: 14px;
  border: 2px solid #e0e0e8;
  border-radius: 12px;
  font-family: "Courier New", monospace;
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  transition: var(--transition);
  background: #fafbff;
  color: #333;
}
.dev-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.dev-textarea[readonly] {
  cursor: default;
  background: #f8f9fc;
}
.dev-output {
  font-family: "Courier New", monospace;
  white-space: pre-wrap;
  word-break: break-all;
}

/* JWT Panels */
.jwt-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}
@media (max-width: 768px) {
  .jwt-panels { grid-template-columns: 1fr; }
}
.jwt-panel { display: flex; flex-direction: column; }
.jwt-panel-header {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.jwt-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px solid #eee;
  font-size: 0.85rem;
}
.jwt-info-row:last-child { border-bottom: none; }
.jwt-info-val {
  font-weight: 600;
  color: var(--text);
  text-align: right;
}

/* FAQ Section */
.faq-section {
  margin-bottom: 48px;
}
.faq-section h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--text);
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 10px;
  background: var(--bg);
}
.faq-q {
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 8px;
}
.faq-a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.faq-a p { margin: 0; }

/* === SEO Content Section === */
.tool-content {
  max-width: 720px;
  margin: 40px auto;
  padding: 0 20px;
  line-height: 1.8;
  color: #444;
  font-size: 1rem;
}
.tool-content p {
  margin: 0 0 1em;
}

/* How-to steps with descriptions */
.howto .step small {
  display: block;
  font-weight: 400;
  color: #666;
  font-size: 0.85rem;
  margin-top: 4px;
  line-height: 1.5;
}

/* === SEO Intro Section (homepage) === */
.seo-intro {
  max-width: 800px;
  margin: -10px auto 30px;
  padding: 0 20px;
  text-align: center;
  line-height: 1.8;
  color: #555;
  font-size: 0.95rem;
}
.seo-intro p {
  margin: 0;
}
.seo-intro strong {
  color: #333;
}

/* === Category Descriptions === */
.cat-desc {
  font-size: 0.9rem;
  color: #666;
  margin: -8px 0 16px;
  line-height: 1.6;
  max-width: 700px;
}

/* === Hero enhancement === */
.hero-title .highlight {
  white-space: nowrap;
}