:root {
  --bg-1: #020617;
  --bg-2: #0b1120;
  --bg-3: #020617;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --accent-soft: rgba(56, 189, 248, 0.18);
  --warn: #f97316;
  --success: #22c55e;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border-subtle: #1f2937;
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --shadow-soft: 0 26px 90px rgba(15, 23, 42, 0.9);
  --shadow-subtle: 0 14px 40px rgba(15, 23, 42, 0.9);
  --transition-fast: 0.18s ease-out;
  --transition-med: 0.28s ease-out;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: #020617;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Animated gradient background layer */

.bg-animated {
  position: fixed;
  inset: 0;
  z-index: -3;
  background: radial-gradient(circle at 0% 0%, #0b1120 0, #020617 45%, #000 100%);
  overflow: hidden;
}

.bg-gradient {
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 0% 0%, #0ea5e9 0, transparent 45%),
              radial-gradient(circle at 100% 0%, #6366f1 0, transparent 45%),
              radial-gradient(circle at 50% 100%, #22c55e 0, transparent 50%);
  opacity: 0.55;
  filter: blur(40px);
  animation: bgShift 18s ease-in-out infinite alternate;
  will-change: transform, opacity;
}

@keyframes bgShift {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
    opacity: 0.55;
  }
  50% {
    transform: translate3d(-4%, 3%, 0) scale(1.05);
    opacity: 0.7;
  }
  100% {
    transform: translate3d(4%, -3%, 0) scale(1.08);
    opacity: 0.6;
  }
}

/* Floating light orbs */

.bg-orb {
  position: absolute;
  border-radius: 999px;
  filter: blur(35px);
  opacity: 0.22;
  mix-blend-mode: screen;
  will-change: transform, opacity;
}

.bg-orb.orb-1 {
  width: 320px;
  height: 320px;
  background: #38bdf8;
  top: 6%;
  left: 8%;
  animation: orbFloat1 24s ease-in-out infinite;
}

.bg-orb.orb-2 {
  width: 260px;
  height: 260px;
  background: #6366f1;
  top: 60%;
  right: 5%;
  animation: orbFloat2 26s ease-in-out infinite;
}

.bg-orb.orb-3 {
  width: 180px;
  height: 180px;
  background: #22c55e;
  bottom: -4%;
  left: 35%;
  animation: orbFloat3 30s ease-in-out infinite;
}

@keyframes orbFloat1 {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(30px, -20px, 0) scale(1.08); }
  100% { transform: translate3d(-20px, 30px, 0) scale(0.98); }
}

@keyframes orbFloat2 {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(-40px, 20px, 0) scale(1.04); }
  100% { transform: translate3d(20px, -30px, 0) scale(0.96); }
}

@keyframes orbFloat3 {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(10px, -25px, 0) scale(1.06); }
  100% { transform: translate3d(-15px, 15px, 0) scale(0.97); }
}

/* CONTENT SHELL */

.shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 28px 18px 40px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
  z-index: 1;
}

/* HEADER */

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 18px;
  background: radial-gradient(circle at 0 0, #38bdf8, #a855f7 50%, #22c55e 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 16px 50px rgba(56, 189, 248, 0.75);
  transform-style: preserve-3d;
  perspective: 600px;
  transition: transform 0.4s ease-out, box-shadow 0.4s ease-out;
  will-change: transform, box-shadow;
}

.brand-mark:hover {
  transform: translateY(-2px) rotateX(6deg) rotateY(-4deg);
  box-shadow: 0 24px 70px rgba(56, 189, 248, 0.85);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 15px;
  background: radial-gradient(circle at 20% 20%, #020617, #020617 60%, #020617);
}

.brand-inner-orbit {
  position: absolute;
  inset: 11px;
  border-radius: 999px;
  border: 1px dashed rgba(56, 189, 248, 0.7);
  box-shadow: 0 0 22px rgba(56, 189, 248, 0.9);
  animation: orbitPulse 3s ease-in-out infinite;
  will-change: transform, opacity;
}

@keyframes orbitPulse {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50%      { transform: scale(1.06); opacity: 1; }
}

.brand-copy h1 {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0.02em;
}

.brand-copy span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.tag-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--success);
  box-shadow: 0 0 12px rgba(34, 197, 94, 0.8);
  animation: glowPulse 2.5s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 10px rgba(34, 197, 94, 0.6); }
  50%      { box-shadow: 0 0 18px rgba(34, 197, 94, 1); }
}

/* GRIDS */

.top-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.3fr);
  gap: 22px;
  align-items: stretch;
}

.viz-row {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.2fr);
  gap: 22px;
  margin-top: 8px;
}

.bottom-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.3fr);
  gap: 22px;
  margin-top: 14px;
}

/* CARDS */

.card {
  border-radius: var(--radius-xl);
  background: rgba(15, 23, 42, 0.94);
  border: 1px solid rgba(148, 163, 184, 0.26);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
  transform: translateY(0);
  transition: transform 0.22s ease-out, box-shadow 0.22s ease-out, border-color 0.22s ease-out, background 0.22s ease-out;
  will-change: transform, box-shadow;
  backdrop-filter: blur(18px);
}

.card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.18), transparent 60%),
    radial-gradient(circle at 100% 0, rgba(129, 140, 248, 0.22), transparent 60%);
  opacity: 0.7;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 30px 100px rgba(15, 23, 42, 0.98);
  border-color: rgba(56, 189, 248, 0.5);
  background: rgba(15, 23, 42, 0.98);
}

.card-content {
  position: relative;
  z-index: 1;
  padding: 20px 20px 18px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.card-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-title h2 {
  margin: 0;
  font-size: 20px;
  letter-spacing: 0.01em;
}

.card-title span {
  font-size: 14px;
  color: var(--muted);
}

.mode-toggle {
  display: inline-flex;
  padding: 4px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-subtle);
}

.mode-btn {
  border: none;
  background: transparent;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  position: relative;
  transition: color var(--transition-fast), transform var(--transition-fast), background 0.2s ease-out;
  will-change: transform, background;
  overflow: hidden;
}

.mode-btn span {
  margin-left: 6px;
  font-size: 16px;
}

.mode-btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.2), transparent 55%);
  opacity: 0;
  transition: opacity 0.2s ease-out;
  pointer-events: none;
}

.mode-btn:hover::after { opacity: 1; }

.mode-btn.active {
  color: #e5f3ff;
  transform: translateY(-1px);
}

.mode-btn.active::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, #0f172a, #020617);
  box-shadow:
    0 0 0 1px rgba(56, 189, 248, 0.9),
    0 18px 45px rgba(8, 47, 73, 0.95);
  z-index: -1;
}

/* FORM */

.form-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px 20px;
  margin-bottom: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.field-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.field-hint {
  font-size: 12px;
  color: rgba(148, 163, 184, 0.9);
}

.help-icon {
  width: 17px;
  height: 17px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  font-size: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  background: rgba(15, 23, 42, 0.98);
  color: var(--muted);
  transition: transform 0.18s ease-out, box-shadow 0.18s ease-out, border-color 0.18s ease-out;
  will-change: transform, box-shadow;
}

.help-icon:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.9);
  border-color: rgba(56, 189, 248, 0.8);
}

.help-icon::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: 130%;
  transform: translateX(-50%) translateY(8px);
  background: #020617;
  color: #e5e7eb;
  font-size: 12px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.8);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.95);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  z-index: 10;
}

.help-icon:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.input-shell {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(31, 41, 55, 0.98);
  background: radial-gradient(circle at top, #020617, #020617);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast), background var(--transition-fast);
  will-change: transform, box-shadow;
  overflow: hidden;
}

.input-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0 0, var(--accent-soft), transparent 55%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease-out;
}

.input-shell:focus-within::after { opacity: 1; }

.input-shell:focus-within {
  border-color: rgba(56, 189, 248, 0.95);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.9), 0 20px 55px rgba(8, 47, 73, 0.98);
  transform: translateY(-1px);
  background: radial-gradient(circle at top, #020617, #020617);
}

.prefix {
  font-size: 14px;
  color: var(--muted);
}

input, select, textarea {
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font-size: 15px;
  width: 100%;
  font-family: inherit;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

input::placeholder, textarea::placeholder {
  color: rgba(148, 163, 184, 0.7);
}

select {
  padding-right: 20px; /* Space for the custom arrow */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%239ca3af'%3E%3Cpath fill-rule='evenodd' d='M5.23 7.21a.75.75 0 011.06.02L10 10.94l3.71-3.71a.75.75 0 111.06 1.06l-4.25 4.25a.75.75 0 01-1.06 0L5.21 8.27a.75.75 0 01.02-1.06z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  background-size: 1em;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
  align-items: center;
  justify-content: space-between;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  position: relative;
  border-radius: 999px;
  border: none;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  transform: translateY(0);
  transition: transform 0.15s ease-out, box-shadow 0.15s ease-out;
  will-change: transform, box-shadow;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-1);
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.7);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(56, 189, 248, 0.9);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 8px 20px rgba(56, 189, 248, 0.7);
}

.btn-secondary {
  background: var(--bg-1);
  color: var(--text);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.95);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 55px rgba(15, 23, 42, 0.98);
}

.btn-secondary:active {
  transform: translateY(0) scale(0.97);
  box-shadow: 0 10px 32px rgba(15, 23, 42, 0.98);
}

.btn-icon {
  font-size: 16px;
}

.mini-note {
  font-size: 12px;
  color: var(--muted);
}

.error {
  margin-top: 8px;
  font-size: 13px;
  color: #fecaca;
  min-height: 18px;
}

.btn-ripple {
  position: absolute;
  border-radius: 999px;
  transform: scale(0);
  background: rgba(15, 23, 42, 0.25);
  animation: ripple 0.5s ease-out forwards;
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* SUMMARY */

.summary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 14px;
}

.summary-block {
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 0 0, #020617, #020617);
  border: 1px solid rgba(30, 64, 175, 0.8);
  padding: 14px 14px 12px;
  box-shadow: var(--shadow-subtle);
  position: relative;
  overflow: hidden;
}

.summary-block:first-child::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg, transparent 0%, rgba(56, 189, 248, 0.05) 40%, rgba(129, 140, 248, 0.15) 50%, transparent 70%
  );
  transform: translateX(-120%);
  opacity: 0;
  pointer-events: none;
  animation: summaryShimmer 7s ease-in-out infinite;
}

@keyframes summaryShimmer {
  0%, 70% { transform: translateX(-120%); opacity: 0; }
  80% { opacity: 1; }
  100% { transform: translateX(120%); opacity: 0; }
}

.summary-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.summary-header span:first-child {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.summary-pill {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  background: rgba(56, 189, 248, 0.25);
  color: var(--accent);
}

.metric-main {
  position: relative;
  z-index: 1;
}

.metric-main-label {
  display: block;
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 4px;
}

.metric-value {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.05em;
  color: #e5f3ff;
  line-height: 1.1;
  display: flex;
  align-items: flex-start;
  gap: 6px;
}

.metric-currency {
  font-size: 28px;
  font-weight: 500;
  color: var(--accent);
  opacity: 0.85;
}

.metric-sub {
  display: block;
  font-size: 13px;
  color: rgba(148, 163, 184, 0.95);
  margin-top: 4px;
  line-height: 1.3;
}

.summary-block:last-child {
  padding: 18px 14px;
  border: 1px solid rgba(34, 197, 94, 0.5);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
}

.metric-side {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.4;
}

.metric-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
  font-size: 12px;
  font-weight: 500;
}

.metric-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: linear-gradient(135deg, #22c55e, #4ade80);
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.28);
}

.results-animate {
  animation: fadeUp 0.45s var(--transition-med);
}

@keyframes fadeUp {
  0% { opacity: 0; transform: translateY(12px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* VISUALIZATION */

.viz-card {
  border-radius: var(--radius-xl);
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(56, 189, 248, 0.4);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
  transform: translateY(0);
  transition: transform 0.22s ease-out, box-shadow 0.22s ease-out, border-color 0.22s ease-out, background 0.22s ease-out;
  will-change: transform, box-shadow;
  backdrop-filter: blur(18px);
}

.viz-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 32px 95px rgba(8, 47, 73, 0.98);
  border-color: rgba(56, 189, 248, 0.7);
  background: rgba(15, 23, 42, 0.99);
}

.viz-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 10% 0, rgba(56, 189, 248, 0.22), transparent 60%),
              radial-gradient(circle at 100% 100%, rgba(129, 140, 248, 0.26), transparent 60%);
  opacity: 0.7;
  pointer-events: none;
}

.viz-card.viz-animate { /* Added class for JS animation */
  animation: fadeUp 0.45s var(--transition-med);
}

.viz-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 15px;
  margin-bottom: 12px;
}

.viz-heading {
  font-size: 16px;
  margin-bottom: 4px;
}

.viz-subheading {
  font-size: 13px;
  color: var(--muted);
}

.viz-tag {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  background: rgba(148, 163, 184, 0.2);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.viz-body {
  height: 240px;
  position: relative;
}

.pie-card-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

#pieChart {
  max-width: 200px;
  max-height: 200px;
}

.viz-legend {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.viz-legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(15, 23, 42, 0);
  background: rgba(15, 23, 42, 0.5);
  transition: transform 0.18s ease-out, box-shadow 0.18s ease-out, border-color 0.18s ease-out, background 0.18s ease-out;
  will-change: transform, box-shadow;
  cursor: default;
}

.viz-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  box-shadow: 0 0 0 4px rgba(15, 23, 42, 0.95);
}

.viz-legend-item:hover {
  transform: translateY(-1px);
  border-color: rgba(56, 189, 248, 0.95);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.8);
  background: rgba(15, 23, 42, 1);
}

/* BOTTOM CONTENT */

.info-card, .contact-card {
  border-radius: var(--radius-xl);
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(31, 41, 55, 0.9);
  padding: 20px;
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
  transform: translateY(0);
  transition: transform 0.22s ease-out, box-shadow 0.22s ease-out, border-color 0.22s ease-out, background 0.22s ease-out;
  will-change: transform, box-shadow;
  backdrop-filter: blur(18px);
}

.info-card:hover, .contact-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 30px 100px rgba(15, 23, 42, 0.98);
  border-color: rgba(56, 189, 248, 0.35);
  background: rgba(15, 23, 42, 0.98);
}

.info-card::before, .contact-card::before {
  content: "";
  position: absolute;
  inset: -30%;
  background: radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.12), transparent 55%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease-out;
}

.info-card:hover::before, .contact-card:hover::before {
  opacity: 1;
}

.info-card h2,
.contact-card h2 {
  margin: 0 0 10px;
  font-size: 18px;
  color: var(--text);
}

.info-card p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 12px;
}

.info-card ul {
  margin: 10px 0 0;
  padding-left: 20px;
  font-size: 14px;
  color: var(--muted);
}

.info-card li {
  margin-bottom: 6px;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: 8px;
}

/* FOOTER */

footer {
  border-top: 1px solid var(--border-subtle);
  padding: 16px 18px 18px;
  background: rgba(2, 6, 23, 0.98);
  font-size: 13px;
  color: var(--muted);
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-strong);
}

.disclaimer {
  max-width: 400px;
  text-align: right;
  line-height: 1.4;
}

/* =======================================
   RESPONSIVENESS AND MOBILE OPTIMIZATION
   ======================================= */

/* 1. Large Screens / Tablets (Below 960px) */
@media (max-width: 960px) {
  /* Stack the main three sections into a single column */
  .top-grid, .viz-row, .bottom-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  /* General padding adjustment for smaller screens */
  .shell {
    padding: 20px 16px 30px;
  }
}

/* 2. Small Tablets / Large Phones (Below 640px) */
@media (max-width: 640px) {
  /* Stack the two columns within the form */
  .form-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  
  /* Reduce main header size */
  .brand-copy h1 {
    font-size: 22px;
  }
  
  /* Reduce card title size */
  .card-title h2 {
    font-size: 18px;
  }
  
  /* Adjust chart and info card padding */
  .viz-card, .info-card, .contact-card {
    padding: 18px;
  }
  
  /* Footer refinement: stack links and disclaimer */
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .disclaimer {
    text-align: left;
    max-width: 100%;
    margin-top: 10px;
  }
}

/* 3. Mobile Phones (Below 520px) */
@media (max-width: 520px) {
  /* Summary grid stacks to single column for better use of vertical space */
  .summary-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  
  /* Increase main metric visibility for small phones */
  .metric-main .metric-value {
    font-size: 40px;
  }
  
  .metric-main .metric-currency {
    font-size: 26px;
  }
  
  /* Stack buttons vertically to ensure large tap targets */
  .btn-row {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .mini-note {
    font-size: 11px;
    margin-top: 12px;
  }

  /* Footer links stacking */
  .footer-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}