/* ═══════════════════════════════════════════════
   TIP CALCULATOR — Full Website Premium Design
   ═══════════════════════════════════════════════ */

/* ── Design Tokens ── */
:root {
  --bg-deep: #0a0e1a;
  --bg-surface: #111827;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-input: rgba(255, 255, 255, 0.06);
  --bg-input-focus: rgba(255, 255, 255, 0.09);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-strong: rgba(255, 255, 255, 0.14);
  --border-focus: rgba(139, 92, 246, 0.5);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-accent: #a78bfa;
  --accent: #8b5cf6;
  --accent-light: #a78bfa;
  --accent-glow: rgba(139, 92, 246, 0.25);
  --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #6366f1 50%, #3b82f6 100%);
  --accent-gradient-vivid: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 40%, #7c3aed 100%);
  --result-bg: rgba(139, 92, 246, 0.06);
  --result-border: rgba(139, 92, 246, 0.15);
  --total-bg: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(59, 130, 246, 0.08) 100%);
  --total-border: rgba(139, 92, 246, 0.25);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.15);
  --radius-2xl: 24px;
  --radius-xl: 18px;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --header-h: 64px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; scroll-behavior: smooth; }
body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-primary);
  background: var(--bg-deep);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Background Mesh ── */
.bg-mesh { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.mesh-orb { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.5; will-change: transform; }
.mesh-orb--1 { width: 600px; height: 600px; top: -200px; right: -100px; background: radial-gradient(circle, rgba(139,92,246,0.35), transparent 70%); animation: orb1 18s ease-in-out infinite; }
.mesh-orb--2 { width: 500px; height: 500px; bottom: -150px; left: -100px; background: radial-gradient(circle, rgba(59,130,246,0.3), transparent 70%); animation: orb2 22s ease-in-out infinite; }
.mesh-orb--3 { width: 350px; height: 350px; top: 40%; left: 50%; background: radial-gradient(circle, rgba(236,72,153,0.2), transparent 70%); animation: orb3 25s ease-in-out infinite; }
.mesh-orb--4 { width: 250px; height: 250px; top: 10%; left: 20%; background: radial-gradient(circle, rgba(16,185,129,0.15), transparent 70%); animation: orb4 20s ease-in-out infinite; }
@keyframes orb1 { 0%,100%{transform:translate(0,0) scale(1)} 33%{transform:translate(-40px,60px) scale(1.1)} 66%{transform:translate(30px,-30px) scale(.95)} }
@keyframes orb2 { 0%,100%{transform:translate(0,0) scale(1)} 33%{transform:translate(50px,-40px) scale(1.05)} 66%{transform:translate(-30px,50px) scale(.9)} }
@keyframes orb3 { 0%,100%{transform:translate(-50%,0) scale(1)} 50%{transform:translate(-50%,-40px) scale(1.15)} }
@keyframes orb4 { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(30px,30px) scale(1.1)} }

/* ══════════════════════════════════════════
   SITE HEADER
   ══════════════════════════════════════════ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--border-glass);
  height: var(--header-h);
}
.header-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 0 24px; height: 100%;
  display: flex; align-items: center; justify-content: space-between;
}
.site-logo {
  display: flex; align-items: center; gap: 8px;
  text-decoration: none; color: var(--text-primary);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700; font-size: 1.3rem;
}
.logo-icon { font-size: 1.5rem; }
.logo-accent { color: var(--accent-light); }
.desktop-nav { display: flex; gap: 8px; }
.nav-link {
  padding: 8px 16px; border-radius: var(--radius-sm);
  color: var(--text-secondary); text-decoration: none;
  font-size: 0.9rem; font-weight: 500;
  transition: color var(--duration-fast) ease, background var(--duration-fast) ease;
}
.nav-link:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }
.nav-link--active { color: var(--accent-light); }

/* Mobile menu button */
.mobile-menu-btn {
  display: none; background: none; border: 0; color: var(--text-primary);
  cursor: pointer; padding: 8px; border-radius: var(--radius-sm);
}
.menu-icon--close { display: none; }
.mobile-menu-btn[aria-expanded="true"] .menu-icon--open { display: none; }
.mobile-menu-btn[aria-expanded="true"] .menu-icon--close { display: block; }

/* Mobile menu */
.mobile-menu-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  z-index: 98; opacity: 0; pointer-events: none;
  transition: opacity var(--duration-normal) ease;
}
.mobile-menu-overlay.active { opacity: 1; pointer-events: auto; }
.mobile-menu {
  position: fixed; top: var(--header-h); right: 0; bottom: 0;
  width: min(320px, 85vw); z-index: 99;
  background: rgba(17, 24, 39, 0.98);
  backdrop-filter: blur(20px);
  border-left: 1px solid var(--border-glass);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
  display: flex; flex-direction: column; padding: 24px;
}
.mobile-menu.active { transform: translateX(0); }
.mobile-nav-link {
  display: block; padding: 14px 16px; border-radius: var(--radius-md);
  color: var(--text-secondary); text-decoration: none;
  font-size: 1.05rem; font-weight: 500;
  transition: color var(--duration-fast) ease, background var(--duration-fast) ease;
}
.mobile-nav-link:hover, .mobile-nav-link--active { color: var(--accent-light); background: rgba(139,92,246,0.08); }
.mobile-menu-footer { margin-top: auto; padding-top: 20px; border-top: 1px solid var(--border-glass); color: var(--text-muted); font-size: 0.85rem; }
.mobile-social { display: flex; gap: 12px; margin-top: 12px; }
.mobile-social a { color: var(--text-muted); transition: color var(--duration-fast) ease; }
.mobile-social a:hover { color: var(--accent-light); }

@media (max-width: 700px) {
  .desktop-nav { display: none; }
  .mobile-menu-btn { display: block; }
}

/* ══════════════════════════════════════════
   APP SHELL & HERO
   ══════════════════════════════════════════ */
.app-shell {
  position: relative; z-index: 1;
  max-width: 1200px; width: 100%;
  margin: 0 auto;
  padding: calc(var(--header-h) + 40px) 40px 60px;
}
.hero {
  text-align: center; padding: 20px 0 32px;
  animation: hero-enter 800ms var(--ease-out) both;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: var(--radius-pill);
  background: var(--accent-gradient); color: #fff;
  font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 16px;
  box-shadow: 0 4px 15px rgba(139,92,246,0.35);
}
h1 {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 700; letter-spacing: -0.03em; line-height: 1.1;
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 40%, #a78bfa 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
h2 { margin: 0; font-family: "Space Grotesk", sans-serif; font-weight: 700; }
.hero-sub { margin-top: 10px; color: var(--text-secondary); font-size: 1rem; max-width: 520px; margin-inline: auto; }

/* ══════════════════════════════════════════
   TOOL LAYOUT (two-column on wide screens)
   ══════════════════════════════════════════ */
.tool-layout { max-width: 640px; margin: 0 auto; }

/* ══════════════════════════════════════════
   GLASS CARD / CALCULATOR FIELDS
   ══════════════════════════════════════════ */
.glass-card {
  position: relative; padding: 28px 24px 24px; margin-top: 16px;
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border-glass);
  background: var(--bg-card);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  animation: card-enter 600ms var(--ease-out) both;
  transition: border-color var(--duration-normal) ease;
}
.glass-card:hover { border-color: var(--border-glass-strong); }
.card-main { animation-delay: 100ms; }
.card-split { animation-delay: 200ms; padding-top: 14px; }
.card-header { margin-bottom: 20px; }
.card-header h2 { display: flex; align-items: center; gap: 10px; font-size: clamp(1.15rem,2vw,1.35rem); color: var(--text-primary); letter-spacing: -0.01em; }
.card-header h2 svg { color: var(--accent-light); flex-shrink: 0; }

.field-group { margin-top: 18px; }
.field-group:first-of-type { margin-top: 0; }
.field-label { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; cursor: default; }
.label-text { font-size: 0.88rem; font-weight: 600; color: var(--text-secondary); letter-spacing: 0.01em; }
.info-dot { display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px; border-radius: 50%; color: var(--text-muted); cursor: help; transition: color var(--duration-fast) ease; }
.info-dot:hover { color: var(--accent-light); }
.total-badge { font-size: 0.65rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-light); padding: 2px 8px; border-radius: var(--radius-pill); background: rgba(139,92,246,0.12); border: 1px solid rgba(139,92,246,0.2); }
.field-hint { margin: 6px 0 0 2px; font-size: 0.8rem; color: var(--text-muted); }

.input-group {
  display: flex; align-items: center; min-height: 52px;
  border: 1.5px solid var(--border-glass-strong); border-radius: var(--radius-lg);
  background: var(--bg-input);
  transition: border-color var(--duration-normal) ease, background-color var(--duration-normal) ease, box-shadow var(--duration-normal) ease;
}
.input-group:focus-within { border-color: var(--border-focus); background: var(--bg-input-focus); box-shadow: 0 0 0 3px var(--accent-glow), var(--shadow-sm); }
.input-group--result { background: var(--result-bg); border-color: var(--result-border); }
.input-group--total { background: var(--total-bg); border-color: var(--total-border); border-width: 1.5px; }
.input-icon { display: flex; align-items: center; justify-content: center; padding-left: 14px; color: var(--text-muted); flex-shrink: 0; transition: color var(--duration-fast) ease; }
.input-group:focus-within .input-icon { color: var(--accent-light); }
.input-group--total .input-icon { color: var(--accent-light); }

input[type="number"], input[type="text"] {
  width: 100%; border: 0; outline: 0; padding: 0 12px;
  color: var(--text-primary); background: transparent;
  font-family: inherit; font-size: 1.05rem; font-weight: 500; min-height: 50px;
}
input[type="number"]::placeholder { color: var(--text-muted); }
input[readonly] { color: var(--text-primary); font-weight: 600; }
.input-group--total input[readonly] {
  font-size: 1.15rem; font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-light));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"] { -moz-appearance: textfield; appearance: textfield; }

.currency-select {
  width: auto; min-width: 90px; border: 0;
  border-left: 1px solid var(--border-glass-strong); outline: 0;
  padding: 0 30px 0 12px; min-height: 50px;
  color: var(--accent-light); font-family: inherit;
  font-size: 0.88rem; font-weight: 600;
  background: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23a78bfa' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") right 12px center / 10px 6px no-repeat, transparent;
  appearance: none; cursor: pointer; letter-spacing: 0.02em;
  transition: color var(--duration-fast) ease;
}
.currency-select:hover { color: #c4b5fd; }
.currency-select option { background: var(--bg-surface); color: var(--text-primary); }

.unit-badge { padding: 0 14px 0 0; color: var(--accent-light); font-weight: 700; font-size: 0.95rem; flex-shrink: 0; }

/* Tip Presets */
.tip-presets { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; margin-top: 12px; }
.tip-chip {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; min-height: 56px; padding: 8px 4px;
  border: 1.5px solid var(--border-glass-strong); border-radius: var(--radius-md);
  background: var(--bg-input); cursor: pointer; font-family: inherit;
  transition: transform var(--duration-fast) var(--ease-spring), border-color var(--duration-normal) ease, background var(--duration-normal) ease, box-shadow var(--duration-normal) ease;
}
.tip-chip:hover { transform: translateY(-2px); border-color: rgba(139,92,246,0.35); background: rgba(139,92,246,0.08); box-shadow: 0 4px 12px rgba(139,92,246,0.15); }
.tip-chip:active { transform: translateY(0) scale(0.97); }
.tip-chip.active { border-color: var(--accent); background: var(--accent-gradient-vivid); box-shadow: 0 4px 20px rgba(139,92,246,0.4); }
.chip-value { font-size: 1rem; font-weight: 700; color: var(--text-secondary); transition: color var(--duration-fast) ease; }
.tip-chip.active .chip-value { color: #fff; }
.chip-label { font-size: 0.65rem; font-weight: 500; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; transition: color var(--duration-fast) ease; }
.tip-chip.active .chip-label { color: rgba(255,255,255,0.75); }

/* Dividers */
.section-divider { display: flex; align-items: center; gap: 14px; margin: 26px 0 8px; }
.section-divider::before, .section-divider::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, transparent, var(--border-glass-strong), transparent); }
.divider-label { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); }

.result-field { position: relative; }
.result-total { margin-top: 12px; }

/* Rate Strip */
.rate-strip { margin-top: 20px; padding: 14px 16px; border-radius: var(--radius-md); background: rgba(139,92,246,0.06); border: 1px solid rgba(139,92,246,0.1); color: var(--text-secondary); font-size: 0.82rem; line-height: 1.55; }
.rate-strip a { color: var(--accent-light); text-decoration: none; font-weight: 600; transition: color var(--duration-fast) ease; }
.rate-strip a:hover { color: #c4b5fd; text-decoration: underline; }

/* Split Toggle */
.split-toggle { width: 100%; border: 0; background: transparent; padding: 12px 4px; display: flex; align-items: center; gap: 12px; color: inherit; cursor: pointer; text-align: left; font-family: inherit; transition: opacity var(--duration-fast) ease; }
.split-toggle:hover { opacity: 0.85; }
.toggle-icon-wrap { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: var(--radius-md); background: var(--accent-gradient); color: #fff; flex-shrink: 0; box-shadow: 0 2px 10px rgba(139,92,246,0.3); }
.split-heading { flex: 1; font-size: clamp(1.1rem,2vw,1.3rem); font-family: "Space Grotesk", sans-serif; font-weight: 700; color: var(--text-primary); }
.chevron-icon { display: flex; align-items: center; color: var(--text-muted); transition: transform var(--duration-normal) var(--ease-out); }
.split-toggle[aria-expanded="false"] .chevron-icon { transform: rotate(180deg); }
.split-content { padding: 8px 0 4px; animation: slide-down 300ms var(--ease-out); }
.split-content[hidden] { display: none; }

/* ══════════════════════════════════════════
   CONTENT SECTIONS
   ══════════════════════════════════════════ */
.content-section { margin-top: 80px; }
.section-header { text-align: center; margin-bottom: 40px; }
.section-badge {
  display: inline-block; padding: 5px 14px; border-radius: var(--radius-pill);
  background: rgba(139,92,246,0.1); border: 1px solid rgba(139,92,246,0.2);
  color: var(--accent-light); font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 14px;
}
.section-header h2 {
  font-size: clamp(1.6rem,4vw,2.4rem); letter-spacing: -0.02em;
  background: linear-gradient(135deg, #f1f5f9, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.section-sub { margin-top: 10px; color: var(--text-secondary); font-size: 1rem; max-width: 500px; margin-inline: auto; }

/* Steps Grid */
.steps-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.step-card {
  position: relative; padding: 32px 24px; border-radius: var(--radius-2xl);
  border: 1px solid var(--border-glass); background: var(--bg-card);
  backdrop-filter: blur(12px); text-align: center;
  transition: border-color var(--duration-normal) ease, transform var(--duration-normal) var(--ease-out);
}
.step-card:hover { border-color: var(--border-glass-strong); transform: translateY(-4px); }
.step-number {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent-gradient); color: #fff;
  font-weight: 800; font-size: 0.75rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(139,92,246,0.4);
}
.step-icon-wrap { display: flex; align-items: center; justify-content: center; margin: 8px auto 16px; color: var(--accent-light); width: 56px; height: 56px; border-radius: var(--radius-lg); background: rgba(139,92,246,0.08); border: 1px solid rgba(139,92,246,0.15); }
.step-card h3 { font-family: "Space Grotesk", sans-serif; font-size: 1.1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.step-card p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; }

/* Country Grid */
.country-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.country-card {
  padding: 24px 16px; border-radius: var(--radius-xl);
  border: 1px solid var(--border-glass); background: var(--bg-card);
  backdrop-filter: blur(12px); text-align: center;
  transition: border-color var(--duration-normal) ease, transform var(--duration-normal) var(--ease-out);
}
.country-card:hover { border-color: rgba(139,92,246,0.25); transform: translateY(-3px); }
.country-flag { font-size: 2rem; display: block; margin-bottom: 8px; }
.country-card h3 { font-family: "Space Grotesk", sans-serif; font-size: 0.95rem; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.country-tip { display: inline-block; padding: 3px 10px; border-radius: var(--radius-pill); background: rgba(139,92,246,0.1); color: var(--accent-light); font-size: 0.78rem; font-weight: 700; margin-bottom: 8px; }
.country-card p { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }

/* Guide Table */
.guide-card { padding: 0; overflow: hidden; }
.guide-table-wrap { overflow-x: auto; }
.guide-table { width: 100%; border-collapse: collapse; }
.guide-table thead { background: rgba(139,92,246,0.08); }
.guide-table th { padding: 14px 20px; text-align: left; font-size: 0.8rem; font-weight: 700; color: var(--accent-light); text-transform: uppercase; letter-spacing: 0.08em; white-space: nowrap; }
.guide-table td { padding: 14px 20px; font-size: 0.9rem; color: var(--text-secondary); border-top: 1px solid var(--border-glass); }
.guide-table tbody tr:hover { background: rgba(255,255,255,0.02); }
.service-icon { margin-right: 8px; }
.tip-range { display: inline-block; padding: 3px 10px; border-radius: var(--radius-pill); font-size: 0.78rem; font-weight: 700; white-space: nowrap; }
.tip-range--high { background: rgba(139,92,246,0.12); color: var(--accent-light); }
.tip-range--mid { background: rgba(59,130,246,0.12); color: #93c5fd; }
.tip-range--low { background: rgba(16,185,129,0.12); color: #6ee7b7; }

/* ══════════════════════════════════════════
   FAQ
   ══════════════════════════════════════════ */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 8px; }
.faq-item {
  border: 1px solid var(--border-glass); border-radius: var(--radius-lg);
  background: var(--bg-card); backdrop-filter: blur(12px);
  overflow: hidden;
  transition: border-color var(--duration-normal) ease;
}
.faq-item:hover, .faq-item[open] { border-color: var(--border-glass-strong); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 20px; cursor: pointer;
  font-size: 0.95rem; font-weight: 600; color: var(--text-primary);
  list-style: none;
  transition: color var(--duration-fast) ease;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::marker { display: none; content: ""; }
.faq-question:hover { color: var(--accent-light); }
.faq-chevron { color: var(--text-muted); flex-shrink: 0; transition: transform var(--duration-normal) var(--ease-out); }
.faq-item[open] .faq-chevron { transform: rotate(180deg); }
.faq-answer { padding: 0 20px 18px; }
.faq-answer p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }
.faq-answer a { color: var(--accent-light); text-decoration: none; }
.faq-answer a:hover { text-decoration: underline; }

/* ══════════════════════════════════════════
   SITE FOOTER
   ══════════════════════════════════════════ */
.site-footer {
  position: relative; z-index: 1;
  margin-top: 100px; padding: 60px 0 0;
  border-top: 1px solid var(--border-glass);
  background: rgba(10, 14, 26, 0.6);
  backdrop-filter: blur(10px);
}
.footer-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 40px;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
}
.footer-logo { margin-bottom: 16px; }
.footer-desc { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; max-width: 340px; }
.footer-heading { font-family: "Space Grotesk", sans-serif; font-size: 0.85rem; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; letter-spacing: 0.02em; }
.footer-link { display: block; padding: 5px 0; color: var(--text-muted); text-decoration: none; font-size: 0.88rem; transition: color var(--duration-fast) ease; }
.footer-link:hover { color: var(--accent-light); }
.footer-social { display: flex; gap: 10px; }
.social-btn {
  display: flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: var(--radius-md);
  background: rgba(255,255,255,0.05); border: 1px solid var(--border-glass);
  color: var(--text-muted); text-decoration: none;
  transition: color var(--duration-fast) ease, background var(--duration-fast) ease, border-color var(--duration-fast) ease;
}
.social-btn:hover { color: var(--accent-light); background: rgba(139,92,246,0.1); border-color: rgba(139,92,246,0.25); }
.footer-bottom {
  text-align: center; padding: 24px 40px;
  margin-top: 40px; border-top: 1px solid var(--border-glass);
  color: var(--text-muted); font-size: 0.82rem;
}
.footer-bottom a { color: var(--accent-light); text-decoration: none; font-weight: 500; }
.footer-bottom a:hover { text-decoration: underline; }
.footer-rates { margin-top: 4px; font-size: 0.78rem; }
.heart { color: #ec4899; display: inline-block; animation: heartbeat 1.5s ease-in-out infinite; }

/* ══════════════════════════════════════════
   SUBPAGE STYLES
   ══════════════════════════════════════════ */
.page-hero { text-align: center; padding: 40px 0 32px; }
.page-hero h1 { margin-bottom: 12px; }
.page-hero p { color: var(--text-secondary); max-width: 560px; margin-inline: auto; }

.page-content {
  max-width: 800px; margin: 0 auto;
  padding: 32px; border-radius: var(--radius-2xl);
  border: 1px solid var(--border-glass); background: var(--bg-card);
  backdrop-filter: blur(12px);
}
.page-content h2 { font-size: 1.3rem; color: var(--text-primary); margin: 28px 0 12px; }
.page-content h2:first-child { margin-top: 0; }
.page-content p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.8; margin-bottom: 14px; }
.page-content ul, .page-content ol { margin: 12px 0 14px 20px; color: var(--text-secondary); font-size: 0.92rem; line-height: 1.8; }
.page-content a { color: var(--accent-light); text-decoration: none; }
.page-content a:hover { text-decoration: underline; }
.page-content strong { color: var(--text-primary); }

/* Contact Form */
.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.88rem; font-weight: 600; color: var(--text-secondary); }
.form-group input, .form-group textarea {
  width: 100%; padding: 14px 16px; border-radius: var(--radius-lg);
  border: 1.5px solid var(--border-glass-strong); background: var(--bg-input);
  color: var(--text-primary); font-family: inherit; font-size: 0.95rem;
  transition: border-color var(--duration-normal) ease, box-shadow var(--duration-normal) ease;
  outline: none;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-submit {
  align-self: flex-start; padding: 14px 36px;
  border: 0; border-radius: var(--radius-lg);
  background: var(--accent-gradient); color: #fff;
  font-family: inherit; font-size: 0.95rem; font-weight: 700;
  cursor: pointer; letter-spacing: 0.02em;
  box-shadow: 0 4px 15px rgba(139,92,246,0.35);
  transition: transform var(--duration-fast) var(--ease-spring), box-shadow var(--duration-normal) ease;
}
.form-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(139,92,246,0.45); }
.form-submit:active { transform: translateY(0) scale(0.98); }
.form-submit:disabled { opacity: 0.55; cursor: not-allowed; transform: none; box-shadow: none; }
.form-status { font-size: 0.88rem; min-height: 24px; }
.form-status.success { color: #6ee7b7; }
.form-status.error { color: #fca5a5; }
.form-email-fallback { margin-top: 16px; font-size: 0.85rem; color: var(--text-muted); }
.form-email-fallback a { color: var(--accent-light); }

/* Sitemap page */
.sitemap-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; }
.sitemap-group h3 { font-family: "Space Grotesk", sans-serif; font-size: 1rem; font-weight: 700; color: var(--accent-light); margin-bottom: 12px; }
.sitemap-group ul { list-style: none; }
.sitemap-group li { padding: 6px 0; }
.sitemap-group a { color: var(--text-secondary); text-decoration: none; font-size: 0.9rem; transition: color var(--duration-fast) ease; }
.sitemap-group a:hover { color: var(--accent-light); }

/* 404 */
.error-page { text-align: center; padding: 80px 20px; }
.error-code { font-family: "Space Grotesk", sans-serif; font-size: clamp(5rem,15vw,10rem); font-weight: 900; background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; }
.error-page p { color: var(--text-secondary); margin: 16px 0 32px; font-size: 1.1rem; }
.error-btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: var(--radius-lg); background: var(--accent-gradient); color: #fff; text-decoration: none; font-weight: 700; font-size: 0.95rem; box-shadow: 0 4px 15px rgba(139,92,246,0.35); transition: transform var(--duration-fast) var(--ease-spring); }
.error-btn:hover { transform: translateY(-2px); }

/* About features grid */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }
.feature-card {
  padding: 24px; border-radius: var(--radius-xl);
  border: 1px solid var(--border-glass); background: var(--bg-card);
  text-align: center;
  transition: border-color var(--duration-normal) ease, transform var(--duration-normal) var(--ease-out);
}
.feature-card:hover { border-color: rgba(139,92,246,0.25); transform: translateY(-3px); }
.feature-icon { font-size: 2rem; margin-bottom: 12px; }
.feature-card h3 { font-family: "Space Grotesk", sans-serif; font-weight: 700; font-size: 1rem; color: var(--text-primary); margin-bottom: 6px; }
.feature-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; }

/* ══════════════════════════════════════════
   BLOG SYSTEM
   ══════════════════════════════════════════ */

/* Blog listing results meta */
.blog-results-meta {
  text-align: center; margin-bottom: 32px;
  color: var(--text-muted); font-size: 0.88rem;
}
.blog-results-meta strong { color: var(--text-secondary); }

/* Blog grid */
.blog-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  margin-bottom: 48px;
}

/* Blog card */
.blog-card {
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border-glass);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  overflow: hidden;
  transition: border-color var(--duration-normal) ease, transform var(--duration-normal) var(--ease-out), box-shadow var(--duration-normal) ease;
  display: flex; flex-direction: column;
}
.blog-card:hover {
  border-color: rgba(139,92,246,0.25);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md), 0 0 30px rgba(139,92,246,0.1);
}

.blog-card-image {
  position: relative; width: 100%; aspect-ratio: 16/9; overflow: hidden;
  background: rgba(139,92,246,0.05);
}
.blog-card-image img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}
.blog-card:hover .blog-card-image img { transform: scale(1.05); }
.blog-card-category {
  position: absolute; top: 12px; left: 12px;
  padding: 4px 12px; border-radius: var(--radius-pill);
  background: rgba(139,92,246,0.85); backdrop-filter: blur(8px);
  color: #fff; font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
}

.blog-card-body { padding: 20px 20px 24px; flex: 1; display: flex; flex-direction: column; }
.blog-card-date { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.blog-card-date svg { flex-shrink: 0; }
.blog-card-title {
  font-family: "Space Grotesk", sans-serif; font-size: 1.1rem; font-weight: 700;
  color: var(--text-primary); line-height: 1.35; margin-bottom: 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.blog-card-title a { color: inherit; text-decoration: none; transition: color var(--duration-fast) ease; }
.blog-card-title a:hover { color: var(--accent-light); }
.blog-card-desc {
  font-size: 0.88rem; color: var(--text-secondary); line-height: 1.65;
  margin-bottom: 16px; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.blog-card-cta {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.85rem; font-weight: 600; color: var(--accent-light);
  text-decoration: none;
  transition: gap var(--duration-fast) ease, color var(--duration-fast) ease;
}
.blog-card-cta:hover { gap: 10px; color: #c4b5fd; }
.blog-card-cta svg { transition: transform var(--duration-fast) ease; }
.blog-card-cta:hover svg { transform: translateX(3px); }

/* Pagination */
.blog-pagination {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  flex-wrap: wrap;
}
.pagination-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-width: 42px; height: 42px; padding: 0 14px;
  border: 1.5px solid var(--border-glass-strong); border-radius: var(--radius-md);
  background: var(--bg-input); color: var(--text-secondary);
  font-family: inherit; font-size: 0.88rem; font-weight: 600;
  text-decoration: none; cursor: pointer;
  transition: border-color var(--duration-normal) ease, background var(--duration-normal) ease, color var(--duration-normal) ease, transform var(--duration-fast) var(--ease-spring);
}
.pagination-btn:hover:not(.pagination-btn--disabled):not(.pagination-btn--active) {
  border-color: rgba(139,92,246,0.35); background: rgba(139,92,246,0.08); color: var(--accent-light);
  transform: translateY(-2px);
}
.pagination-btn--active {
  border-color: var(--accent); background: var(--accent-gradient-vivid); color: #fff;
  box-shadow: 0 4px 15px rgba(139,92,246,0.35); cursor: default;
}
.pagination-btn--disabled {
  opacity: 0.35; cursor: not-allowed; pointer-events: none;
}
.pagination-ellipsis { color: var(--text-muted); font-size: 0.88rem; padding: 0 4px; }

/* Single blog post */
.blog-post-hero {
  text-align: center; padding: 40px 0 32px;
}
.blog-post-hero .hero-badge { margin-bottom: 16px; }
.blog-post-hero h1 { margin-bottom: 16px; }
.blog-post-meta {
  display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap;
  color: var(--text-muted); font-size: 0.88rem; margin-top: 12px;
}
.blog-post-meta span { display: inline-flex; align-items: center; gap: 6px; }
.blog-post-meta svg { flex-shrink: 0; }
.blog-post-hero-image {
  max-width: 800px; margin: 24px auto 0;
  border-radius: var(--radius-2xl); overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-lg);
}
.blog-post-hero-image img { width: 100%; height: auto; display: block; }

.blog-post-content {
  max-width: 800px; margin: 0 auto;
  padding: 32px; border-radius: var(--radius-2xl);
  border: 1px solid var(--border-glass); background: var(--bg-card);
  backdrop-filter: blur(12px);
}
.blog-post-content h2 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.35rem; color: var(--text-primary);
  margin: 32px 0 14px; letter-spacing: -0.01em;
  padding-bottom: 8px; border-bottom: 1px solid var(--border-glass);
}
.blog-post-content h2:first-child { margin-top: 0; }
.blog-post-content h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.1rem; color: var(--text-primary); margin: 24px 0 10px;
}
.blog-post-content p { font-size: 0.94rem; color: var(--text-secondary); line-height: 1.85; margin-bottom: 16px; }
.blog-post-content ul, .blog-post-content ol { margin: 12px 0 16px 20px; color: var(--text-secondary); font-size: 0.94rem; line-height: 1.85; }
.blog-post-content li { margin-bottom: 6px; }
.blog-post-content a { color: var(--accent-light); text-decoration: none; }
.blog-post-content a:hover { text-decoration: underline; }
.blog-post-content strong { color: var(--text-primary); }
.blog-post-content blockquote {
  margin: 20px 0; padding: 16px 20px;
  border-left: 3px solid var(--accent);
  background: rgba(139,92,246,0.05); border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-secondary); font-style: italic;
}
.blog-post-content blockquote p { margin-bottom: 0; }

/* Blog post navigation (prev/next) */
.blog-post-nav {
  max-width: 800px; margin: 24px auto 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.blog-post-nav-link {
  padding: 20px; border-radius: var(--radius-xl);
  border: 1px solid var(--border-glass); background: var(--bg-card);
  text-decoration: none; display: flex; flex-direction: column; gap: 6px;
  transition: border-color var(--duration-normal) ease, transform var(--duration-normal) var(--ease-out);
}
.blog-post-nav-link:hover { border-color: rgba(139,92,246,0.25); transform: translateY(-3px); }
.blog-post-nav-link--next { text-align: right; }
.blog-post-nav-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-light); }
.blog-post-nav-title { font-size: 0.92rem; font-weight: 600; color: var(--text-primary); line-height: 1.4; }

@media (max-width: 900px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-post-nav { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .blog-grid { grid-template-columns: 1fr; }
  .blog-card-body { padding: 16px 16px 20px; }
  .blog-post-content { padding: 24px 18px; }
}

/* ══════════════════════════════════════════
   LANGUAGE SWITCHER
   ══════════════════════════════════════════ */
.lang-switcher { position: relative; margin-left: 8px; }
.lang-switcher-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: var(--radius-md);
  border: 1.5px solid var(--border-glass); background: var(--bg-input);
  color: var(--text-secondary); font-family: inherit; font-size: 0.82rem; font-weight: 600;
  cursor: pointer; transition: border-color var(--duration-normal) ease, background var(--duration-normal) ease;
}
.lang-switcher-btn:hover { border-color: rgba(139,92,246,0.35); background: rgba(139,92,246,0.06); }
.lang-switcher-btn svg { flex-shrink: 0; }
.lang-chevron { transition: transform var(--duration-normal) var(--ease-out); }
.lang-switcher.open .lang-chevron { transform: rotate(180deg); }

.lang-dropdown {
  position: absolute; top: calc(100% + 8px); right: 0; z-index: 200;
  width: 220px; max-height: 360px; overflow-y: auto;
  padding: 6px; border-radius: var(--radius-lg);
  border: 1.5px solid var(--border-glass-strong);
  background: var(--bg-card); backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(0,0,0,0.3);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity var(--duration-normal) ease, visibility var(--duration-normal) ease, transform var(--duration-normal) var(--ease-out);
}
.lang-switcher.open .lang-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-dropdown::-webkit-scrollbar { width: 5px; }
.lang-dropdown::-webkit-scrollbar-track { background: transparent; }
.lang-dropdown::-webkit-scrollbar-thumb { background: var(--border-glass-strong); border-radius: 10px; }

.lang-option {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; border-radius: var(--radius-sm);
  color: var(--text-secondary); font-size: 0.82rem; font-weight: 500;
  text-decoration: none; cursor: pointer;
  transition: background var(--duration-fast) ease, color var(--duration-fast) ease;
}
.lang-option:hover { background: rgba(139,92,246,0.08); color: var(--text-primary); }
.lang-option--active {
  background: rgba(139,92,246,0.12); color: var(--accent-light); font-weight: 700;
}

@media (max-width: 768px) {
  .lang-switcher { margin-left: auto; margin-right: 8px; }
  .lang-current { display: none; }
  .lang-switcher-btn { padding: 6px 8px; }
  .lang-dropdown { right: -40px; width: 200px; }
}

/* ══════════════════════════════════════════
   RTL SUPPORT (Arabic)
   ══════════════════════════════════════════ */
[dir="rtl"] { direction: rtl; text-align: right; }
[dir="rtl"] .header-inner { flex-direction: row-reverse; }
[dir="rtl"] .desktop-nav { flex-direction: row-reverse; }
[dir="rtl"] .lang-switcher { margin-left: 0; margin-right: 8px; }
[dir="rtl"] .lang-dropdown { right: auto; left: 0; }
[dir="rtl"] .footer-inner { direction: rtl; }
[dir="rtl"] .footer-social { flex-direction: row-reverse; }
[dir="rtl"] .blog-card-cta svg { transform: scaleX(-1); }
[dir="rtl"] .blog-card-cta:hover svg { transform: scaleX(-1) translateX(-3px); }
[dir="rtl"] .blog-post-nav-link--next { text-align: left; }
[dir="rtl"] .blog-post-nav-link:not(.blog-post-nav-link--next) { text-align: right; }
[dir="rtl"] .mobile-menu { right: auto; left: 0; transform: translateX(-100%); }
[dir="rtl"] .mobile-menu.active { transform: translateX(0); }
[dir="rtl"] .hero-badge, [dir="rtl"] .blog-post-meta { flex-direction: row-reverse; }
[dir="rtl"] .blog-card-date { flex-direction: row-reverse; }
[dir="rtl"] .blog-card-category { left: auto; right: 12px; }
[dir="rtl"] .site-logo { flex-direction: row-reverse; }
[dir="rtl"] .pagination-btn { flex-direction: row-reverse; }

/* ══════════════════════════════════════════
   KEYFRAMES
   ══════════════════════════════════════════ */
@keyframes hero-enter { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes card-enter { from { opacity: 0; transform: translateY(24px) scale(0.98); } to { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes slide-down { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes heartbeat { 0%,100%{transform:scale(1)} 15%{transform:scale(1.2)} 30%{transform:scale(1)} 45%{transform:scale(1.15)} 60%{transform:scale(1)} }

/* ══════════════════════════════════════════
   RESPONSIVE — Tablet
   ══════════════════════════════════════════ */
@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .steps-grid { grid-template-columns: 1fr; gap: 24px; }
  .country-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .app-shell { padding: calc(var(--header-h) + 24px) 20px 48px; }
  .hero { padding: 12px 0 24px; }
  .glass-card { padding: 22px 18px 20px; border-radius: var(--radius-xl); }
  .card-split { padding-top: 10px; }
  .tip-presets { grid-template-columns: repeat(4,1fr); gap: 6px; }
  .tip-chip { min-height: 50px; }
  .chip-label { font-size: 0.6rem; }
  .currency-select { min-width: 80px; font-size: 0.82rem; padding-left: 10px; }
  .section-divider { margin: 22px 0 6px; }
  .mesh-orb--1 { width: 350px; height: 350px; }
  .mesh-orb--2 { width: 300px; height: 300px; }
  .mesh-orb--3 { width: 200px; height: 200px; }
  .mesh-orb--4 { width: 150px; height: 150px; }
  .content-section { margin-top: 60px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; padding: 0 20px; }
  .footer-bottom { padding: 20px; }
  .guide-table th, .guide-table td { padding: 12px 14px; font-size: 0.82rem; }
}

@media (max-width: 420px) {
  .app-shell { padding: calc(var(--header-h) + 16px) 16px 40px; }
  .glass-card { padding: 18px 14px 16px; border-radius: var(--radius-lg); }
  .hero-badge { font-size: 0.62rem; padding: 5px 12px; }
  h1 { font-size: 1.8rem; }
  .hero-sub { font-size: 0.88rem; }
  .tip-presets { grid-template-columns: repeat(2,1fr); gap: 8px; }
  .tip-chip { min-height: 52px; }
  .input-group { min-height: 48px; }
  input[type="number"], input[type="text"] { font-size: 0.95rem; min-height: 46px; }
  .currency-select { min-width: 72px; min-height: 46px; font-size: 0.78rem; padding-right: 24px; }
  .card-header h2 { font-size: 1.05rem; }
  .label-text { font-size: 0.82rem; }
  .country-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
}

/* ── Accessibility ── */
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } }
*:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
::selection { background: rgba(139,92,246,0.3); color: #fff; }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(139,92,246,0.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(139,92,246,0.5); }