/* ---- Variables ---- */
:root {
  --bg: #0b0f1a;
  --surface: #131929;
  --surface2: #1c253a;
  --border: #202d45;
  --accent: #00c896;
  --accent-dim: rgba(0,200,150,0.1);
  --accent-hover: #00e8ad;
  --text: #e8edf5;
  --text2: #7a90b0;
  --text3: #3e5270;
  --danger: #ff6b6b;
  --radius: 16px;
  --t: .17s ease;
}
[data-theme="light"] {
  --bg: #eef2f9;
  --surface: #ffffff;
  --surface2: #e4eaf5;
  --border: #cdd7ea;
  --text: #0d1b2e;
  --text2: #4a6080;
  --text3: #9aaec8;
  --accent-dim: rgba(0,180,130,.1);
}

/* ---- Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
input, select, button { font-family: inherit; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Navbar ---- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: rgba(11,15,26,.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
[data-theme="light"] .navbar { background: rgba(255,255,255,.88); }
.nav-logo {
  display: flex; align-items: center; gap: 0.6rem;
  text-decoration: none; color: var(--text);
}
.nav-logo img { width: 30px; height: 30px; border-radius: 8px; }
.nav-logo span {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem; font-weight: 700;
}
.nav-right { display: flex; align-items: center; gap: 1rem; }
.rate-time { font-size: 0.74rem; color: var(--text3); }
.theme-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text2);
  width: 36px; height: 36px;
  cursor: pointer;
  display: grid; place-items: center;
  transition: var(--t);
}
.theme-btn svg { width: 15px; height: 15px; }
.theme-btn:hover { color: var(--accent); border-color: var(--accent); }

/* ---- Main ---- */
main {
  flex: 1;
  max-width: 920px;
  margin: 0 auto;
  width: 100%;
  padding: 2.5rem 1.5rem 5rem;
}

/* ---- Hero ---- */
.hero { text-align: center; margin-bottom: 2.5rem; }
.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  font-weight: 700; color: var(--text);
  margin-bottom: 0.45rem;
}
.hero p { color: var(--text2); font-size: 0.97rem; }

/* ==============================
   CONVERTER CARD
   ============================== */
.converter-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 2rem 1.75rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  align-items: center;
}

/* Each side */
.converter-side {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0 1.25rem;
}
.converter-side:first-child { padding-left: 0; }
.converter-side:last-child  { padding-right: 0; }

.side-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text3);
}

/* Big number input */
.amount-input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  width: 100%;
  padding: 0.15rem 0;
  -moz-appearance: textfield;
}
.amount-input::-webkit-outer-spin-button,
.amount-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.amount-input::placeholder { color: var(--text3); }

/* Result display */
.amount-result {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--accent);
  padding: 0.15rem 0;
  word-break: break-all;
}

/* Currency picker row */
.currency-picker {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
  cursor: pointer;
  transition: border-color var(--t);
  user-select: none;
}
.currency-picker:hover { border-color: var(--accent); }
.currency-picker:focus-within { border-color: var(--accent); }

/* Country code badge */
.cc-badge {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: .04em;
  background: var(--accent);
  color: #0b0f1a;
  border-radius: 5px;
  padding: 2px 5px;
  flex-shrink: 0;
  line-height: 1.5;
}
.cc-badge--to {
  background: rgba(0,200,150,.2);
  color: var(--accent);
}

.picker-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}
.picker-code {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}
.picker-name {
  font-size: 0.7rem;
  color: var(--text2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.picker-chevron {
  width: 14px; height: 14px;
  color: var(--text3);
  flex-shrink: 0;
  transition: transform var(--t);
}
.currency-picker:focus-within .picker-chevron { transform: rotate(180deg); }

/* ---- Custom Dropdown Panel ---- */
.dropdown-panel {
  position: fixed;
  z-index: 999;
  width: 280px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 16px 48px rgba(0,0,0,.45);
  overflow: hidden;
  animation: dropIn .15s ease;
}
@keyframes dropIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.dropdown-search-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
}
.dropdown-search-wrap svg { width: 14px; height: 14px; color: var(--text3); flex-shrink: 0; }
.dropdown-search-wrap input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 0.85rem;
  width: 100%;
}
.dropdown-list {
  list-style: none;
  max-height: 260px;
  overflow-y: auto;
  padding: 0.35rem 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.dropdown-list::-webkit-scrollbar { width: 5px; }
.dropdown-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.dropdown-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.9rem;
  cursor: pointer;
  transition: background var(--t);
  font-size: 0.875rem;
}
.dropdown-list li:hover { background: var(--surface2); }
.dropdown-list li.selected { background: var(--accent-dim); color: var(--accent); }
.dropdown-list li .dl-code { font-weight: 700; min-width: 38px; color: var(--text); }
.dropdown-list li.selected .dl-code { color: var(--accent); }
.dropdown-list li .dl-name { color: var(--text2); font-size: 0.78rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dropdown-list li .dl-badge {
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: .03em;
  background: var(--surface2);
  color: var(--text3);
  border-radius: 4px;
  padding: 1px 4px;
  flex-shrink: 0;
  margin-left: auto;
  text-transform: uppercase;
}

/* Divider between sides */
.swap-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 0.5rem;
  position: relative;
}
.swap-col::before {
  content: '';
  position: absolute;
  top: -2rem; bottom: -1.75rem;
  width: 1px;
  background: var(--border);
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}

.swap-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--text2);
  cursor: pointer;
  display: grid; place-items: center;
  transition: var(--t);
  position: relative;
  z-index: 1;
}
.swap-btn svg { width: 16px; height: 16px; }
.swap-btn:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  transform: rotate(180deg);
}

/* ---- Meta row ---- */
.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}
.rate-badge {
  display: inline-flex;
  align-items: center;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(0,200,150,.2);
  border-radius: 20px;
  padding: 0.3rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
}
.quick-amounts {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.quick-label { font-size: 0.73rem; color: var(--text3); margin-right: 0.15rem; }
.qa-btn {
  padding: 0.28rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text2);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--t);
}
.qa-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* ---- Sections ---- */
.section { margin-top: 3rem; }
.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1.15rem;
}

/* ---- Popular Pairs ---- */
.pairs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 0.8rem;
}
.pair-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.15rem;
  cursor: pointer;
  transition: var(--t);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.pair-card:hover { border-color: var(--accent); transform: translateY(-2px); background: var(--surface2); }
.pair-label { font-size: 0.72rem; color: var(--text3); font-weight: 600; letter-spacing: .04em; text-transform: uppercase; }
.pair-value { font-size: 1.2rem; font-weight: 700; color: var(--text); }
.pair-sub { font-size: 0.72rem; color: var(--text2); }

/* ---- Results ---- */
.results-header {
  display: flex; align-items: center;
  justify-content: space-between;
  flex-wrap: wrap; gap: 0.75rem;
  margin-bottom: 1.15rem;
}
.results-header .section-title { margin-bottom: 0; }
.results-search-wrap {
  display: flex; align-items: center; gap: 0.45rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 0.45rem 0.8rem;
  transition: border-color var(--t);
}
.results-search-wrap:focus-within { border-color: var(--accent); }
.results-search-wrap svg { width: 14px; height: 14px; color: var(--text3); flex-shrink: 0; }
.results-search-wrap input {
  background: transparent; border: none; outline: none;
  color: var(--text); font-size: 0.85rem; width: 190px;
}
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 0.65rem;
}
.result-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  transition: var(--t);
}
.result-item:hover { background: var(--surface2); }
.result-left { display: flex; flex-direction: column; gap: 1px; }
.result-code { font-size: 0.83rem; font-weight: 700; color: var(--text); }
.result-name { font-size: 0.7rem; color: var(--text3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 115px; }
.result-right { display: flex; align-items: center; gap: 0.45rem; }
.result-amount { font-size: 0.92rem; font-weight: 600; color: var(--accent); }
.copy-btn {
  background: transparent; border: none;
  color: var(--text3); cursor: pointer;
  padding: 3px; border-radius: 4px;
  display: grid; place-items: center;
  transition: var(--t); flex-shrink: 0;
}
.copy-btn svg { width: 12px; height: 12px; }
.copy-btn:hover, .copy-btn.copied { color: var(--accent); background: var(--accent-dim); }

/* ---- Convert all ---- */
.center-row { display: flex; justify-content: center; margin-top: 2.5rem; }
.btn-convert-all {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.72rem 2rem;
  background: var(--accent); color: #0b0f1a;
  font-weight: 700; font-size: 0.92rem;
  border: none; border-radius: 10px;
  cursor: pointer; transition: var(--t);
}
.btn-convert-all svg { width: 17px; height: 17px; }
.btn-convert-all:hover { background: var(--accent-hover); transform: translateY(-2px); }
.btn-convert-all:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ---- Spinner ---- */
.spinner-wrap { display: flex; justify-content: center; padding: 2.5rem; }
.spinner {
  width: 30px; height: 30px;
  border: 2.5px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .65s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Error ---- */
.error-msg {
  text-align: center;
  color: var(--danger);
  background: rgba(255,107,107,.07);
  border: 1px solid rgba(255,107,107,.2);
  border-radius: 10px;
  padding: 1rem 1.5rem;
  font-size: 0.88rem;
  margin-top: 1rem;
}

/* ---- Footer ---- */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 2rem;
  text-align: center;
  font-size: 0.74rem;
  color: var(--text3);
}
.footer a { color: var(--text3); }
.footer a:hover { color: var(--accent); }

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .converter-card {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    padding: 1.5rem;
    gap: 1.25rem;
  }
  .converter-side { padding: 0; }
  .swap-col { flex-direction: row; padding: 0; }
  .swap-col::before { display: none; }
  .swap-btn { transform: rotate(90deg); }
  .swap-btn:hover { transform: rotate(270deg); }
  .meta-row { flex-direction: column; align-items: flex-start; }
  .results-search-wrap input { width: 140px; }
  .navbar { padding: 0 1rem; }
  main { padding: 2rem 1rem 3.5rem; }
}