/* ═══════════════════════════════════════════════════════════
   WhatsMyEMI — style.css
   Base layout, typography, calculator, table, footer
═══════════════════════════════════════════════════════════ */

/* ─── Design Tokens ─── */
:root {
  --bg: #0a0e1a;
  --surface: #111827;
  --surface2: #1a2235;
  --border: rgba(255,255,255,0.07);
  --accent: #00d4aa;
  --accent2: #6c63ff;
  --accent3: #f59e0b;
  --text: #e8eaf0;
  --muted: #6b7a99;
  --danger: #ff6b6b;
  --success: #00d4aa;
  --radius: 16px;
  --card-glow: 0 0 0 1px rgba(0,212,170,0.1), 0 20px 60px rgba(0,0,0,0.4);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Ambient mesh background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 10%, rgba(0,212,170,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(108,99,255,0.07) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* ─── Layout ─── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ─── Header ─── */
header {
  padding: 22px 0 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(10,14,26,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: 'Syne', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #00d4aa, #6c63ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo span { color: var(--accent3); -webkit-text-fill-color: var(--accent3); }

.tagline {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.header-badge {
  background: rgba(0,212,170,0.1);
  border: 1px solid rgba(0,212,170,0.25);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 100px;
  letter-spacing: 0.5px;
}

/* ─── Hero ─── */
.hero {
  text-align: center;
  padding: 60px 0 44px;
}

.hero-badge {
  display: inline-block;
  background: rgba(0,212,170,0.1);
  border: 1px solid rgba(0,212,170,0.3);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 20px;
  animation: fadeUp 0.6s ease both;
}

.hero h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 18px;
  animation: fadeUp 0.6s 0.1s ease both;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.7;
  animation: fadeUp 0.6s 0.2s ease both;
}

/* ─── Calculator Card ─── */
.calc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  margin-bottom: 28px;
  box-shadow: var(--card-glow);
  animation: fadeUp 0.6s 0.3s ease both;
}

.calc-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
}

.calc-title::before {
  content: '';
  display: block;
  width: 4px;
  height: 20px;
  background: var(--accent);
  border-radius: 4px;
  flex-shrink: 0;
}

.inputs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

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

.input-group label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.input-wrap { position: relative; }

.input-prefix {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
  pointer-events: none;
}

.input-suffix {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 0.82rem;
  pointer-events: none;
}

input[type="number"],
input[type="date"],
select {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 14px;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.92rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  -moz-appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }

input[type="number"].has-prefix { padding-left: 26px; }
input[type="number"].has-suffix { padding-right: 50px; }

input:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,212,170,0.12);
}

select option { background: var(--surface2); }

/* ─── Buttons ─── */
.btn-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  padding: 13px 28px;
  border-radius: 10px;
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  letter-spacing: 0.3px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #00b896);
  color: #0a0e1a;
  flex: 1;
  min-width: 160px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,212,170,0.35);
}

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

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ─── Results Summary Pills ─── */
.results-summary {
  display: none;
  grid-template-columns: repeat(auto-fit, minmax(175px, 1fr));
  gap: 14px;
  margin-bottom: 36px;
  animation: fadeUp 0.5s ease both;
}

.results-summary.visible { display: grid; }

.result-pill {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: transform 0.2s, box-shadow 0.2s;
  border-top-width: 3px;
}

.result-pill:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
}

.pill-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--muted);
  margin-bottom: 8px;
}

.pill-value {
  font-family: 'Syne', sans-serif;
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1;
}

.pill-sub {
  font-size: 0.7rem;
  color: var(--muted);
  margin-top: 5px;
}

.pill-emi { border-top-color: var(--accent2); }
.pill-interest { border-top-color: var(--danger); }
.pill-total { border-top-color: var(--muted); }
.pill-tenure { border-top-color: var(--accent3); }

.pill-emi .pill-value { color: var(--accent2); }
.pill-interest .pill-value { color: var(--danger); }
.pill-total .pill-value { color: var(--text); }
.pill-tenure .pill-value { color: var(--accent3); }

/* ─── Section Headers ─── */
.section-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
}

.section-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.4px;
}

.section-sub {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 3px;
  line-height: 1.5;
}

/* ─── Combined Banner ─── */
.combined-banner {
  background: linear-gradient(135deg, rgba(0,212,170,0.12), rgba(108,99,255,0.1));
  border: 1px solid rgba(0,212,170,0.25);
  border-radius: var(--radius);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
  animation: fadeUp 0.4s ease both;
}

.cb-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  margin-bottom: 6px;
  font-weight: 600;
}

.cb-metrics {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--text);
}

.cb-metrics strong { color: var(--accent); font-family: 'Syne', sans-serif; }

.cb-tag {
  background: rgba(0,212,170,0.15);
  border: 1px solid rgba(0,212,170,0.3);
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 100px;
}

/* ─── Amortization Table ─── */
.amort-section { display: none; animation: fadeUp 0.5s ease both; }
.amort-section.visible { display: block; }

.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 16px;
}

.table-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 10px;
}

.table-legend {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--muted);
}

.legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-past { background: var(--muted); opacity: 0.5; }
.dot-strategy { background: var(--accent2); opacity: 0.7; }

.table-controls input[type="number"] {
  width: 90px;
  padding: 7px 10px;
  font-size: 0.8rem;
}

.scrollable-table {
  overflow-x: auto;
  max-height: 500px;
  overflow-y: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  min-width: 700px;
}

thead th {
  background: var(--surface2);
  padding: 11px 14px;
  text-align: right;
  font-weight: 600;
  color: var(--muted);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  position: sticky;
  top: 0;
  z-index: 2;
  white-space: nowrap;
}

thead th:first-child { text-align: left; }

tbody tr {
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: background 0.15s;
}

tbody tr:hover { background: rgba(255,255,255,0.03); }
tbody tr.row-past { opacity: 0.65; }
tbody tr.row-strategy { background: rgba(108,99,255,0.06); }
tbody tr.row-today { background: rgba(0,212,170,0.06); border-left: 3px solid var(--accent); }

td {
  padding: 10px 14px;
  text-align: right;
  color: var(--text);
  white-space: nowrap;
}

td:first-child { text-align: left; color: var(--muted); }
td.extra-amt { color: var(--accent2); font-weight: 500; }
td.total-emi { color: var(--text); font-weight: 600; }

/* ─── Divider ─── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 44px 0;
}

/* ─── Footer ─── */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  text-align: center;
  margin-top: 0;
}

.footer-disclaimer {
  font-size: 0.75rem;
  color: var(--muted);
  max-width: 700px;
  margin: 0 auto 10px;
  line-height: 1.6;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--muted);
}

.footer-copy a { color: var(--accent); text-decoration: none; }
.footer-copy a:hover { text-decoration: underline; }

/* ─── Badges ─── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  vertical-align: middle;
  margin-left: 6px;
}

.badge-new { background: rgba(0,212,170,0.18); color: var(--accent); border: 1px solid rgba(0,212,170,0.3); }
.badge-hot { background: rgba(255,107,107,0.18); color: var(--danger); border: 1px solid rgba(255,107,107,0.3); }

/* ─── Animations ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .calc-card { padding: 22px 16px; }
  .hero { padding: 40px 0 30px; }
  .combined-banner { flex-direction: column; align-items: flex-start; }
  .cb-metrics { gap: 14px; }
  .header-badge { display: none; }
}

@media (max-width: 480px) {
  .inputs-grid { grid-template-columns: 1fr 1fr; }
  .results-summary { grid-template-columns: 1fr 1fr; }
}