/* ─── InstaCodeAI — Blue & White Theme ───────────────────── */

:root {
  --blue-900: #1e3a8a;
  --blue-700: #1d4ed8;
  --blue-600: #2563eb;
  --blue-500: #3b82f6;
  --blue-100: #dbeafe;
  --blue-50:  #eff6ff;

  --gray-900: #0f172a;
  --gray-700: #334155;
  --gray-500: #64748b;
  --gray-300: #cbd5e1;
  --gray-100: #f1f5f9;

  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(37, 99, 235, 0.10);
  --shadow-lg: 0 12px 32px rgba(37, 99, 235, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  font-family: var(--font-sans);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ─── Nav ────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--gray-100);
  z-index: 50;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: var(--white);
  box-shadow: var(--shadow-md);
}
.brand-accent { color: var(--blue-600); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-link {
  color: var(--gray-700);
  font-weight: 500;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: background 0.15s ease;
}
.nav-link:hover { background: var(--blue-50); color: var(--blue-700); }

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--blue-600);
  color: var(--white);
  box-shadow: var(--shadow-md);
}
.btn-primary:hover {
  background: var(--blue-700);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: var(--white);
  color: var(--blue-700);
  border-color: var(--blue-100);
}
.btn-outline:hover { background: var(--blue-50); }

.btn-ghost {
  background: transparent;
  color: var(--blue-700);
}
.btn-ghost:hover { background: var(--blue-50); }

.btn-lg { padding: 14px 24px; font-size: 1rem; }

/* ─── Hero ───────────────────────────────────────────────── */
.hero {
  background:
    radial-gradient(1000px 500px at 50% -200px, var(--blue-50), transparent 70%),
    linear-gradient(180deg, var(--white), var(--blue-50));
  padding: 80px 24px 100px;
}
.hero-inner {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
}

.pill {
  display: inline-block;
  padding: 6px 14px;
  background: var(--white);
  color: var(--blue-700);
  border: 1px solid var(--blue-100);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--gray-900);
}
.hero-accent {
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  margin: 20px auto 32px;
  max-width: 620px;
  color: var(--gray-700);
  font-size: 1.1rem;
}
.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 72px;
}

/* ─── Feature grid ───────────────────────────────────────── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  text-align: left;
}
.feature-card {
  background: var(--white);
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--blue-100);
}
.feature-icon {
  font-size: 1.75rem;
  margin-bottom: 12px;
}
.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
  color: var(--gray-900);
}
.feature-card p {
  color: var(--gray-500);
  font-size: 0.95rem;
}

/* ─── Footer ─────────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 32px 24px;
  color: var(--gray-500);
  font-size: 0.875rem;
  border-top: 1px solid var(--gray-100);
  background: var(--white);
}
/* ─── Auth pages ─────────────────────────────────────────── */
.auth {
  min-height: calc(100vh - 160px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  background:
    radial-gradient(800px 400px at 50% 0%, var(--blue-50), transparent 70%),
    linear-gradient(180deg, var(--white), var(--blue-50));
}
.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 40px 32px;
}
.auth-title {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 6px;
}
.auth-subtitle {
  text-align: center;
  color: var(--gray-500);
  margin-bottom: 28px;
}
.auth-form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-700);
}
.field-input {
  padding: 12px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.field-input:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}
.btn-block { width: 100%; }
.auth-footer {
  text-align: center;
  font-size: 0.9rem;
  color: var(--gray-500);
  margin-top: 8px;
}
.link { color: var(--blue-600); font-weight: 600; }
.link:hover { text-decoration: underline; }

/* ─── Pricing page ───────────────────────────────────────── */
.pricing {
  padding: 80px 24px 100px;
  background:
    radial-gradient(1000px 500px at 50% -200px, var(--blue-50), transparent 70%),
    linear-gradient(180deg, var(--white), var(--blue-50));
}
.pricing-inner {
  max-width: 1080px;
  margin: 0 auto;
  text-align: center;
}
.pricing-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 16px 0 12px;
}
.pricing-subtitle {
  color: var(--gray-700);
  max-width: 620px;
  margin: 0 auto 48px;
  font-size: 1.05rem;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  align-items: stretch;
  text-align: left;
}
.price-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.price-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.price-card-featured {
  border: 2px solid var(--blue-500);
  box-shadow: var(--shadow-lg);
  transform: scale(1.02);
}
.price-card-featured:hover { transform: scale(1.02) translateY(-4px); }
.price-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blue-600);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}
.price-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
}
.price-amount {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 12px;
}
.price-num {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--blue-700);
}
.price-per {
  color: var(--gray-500);
  font-size: 0.9rem;
}
.price-desc {
  color: var(--gray-500);
  font-size: 0.95rem;
  margin-bottom: 20px;
}
.price-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  flex-grow: 1;
}
.price-features li {
  color: var(--gray-700);
  font-size: 0.95rem;
}
.pricing-note {
  color: var(--gray-500);
  font-size: 0.875rem;
  margin-top: 40px;
}
.field-error { color: #dc2626; font-size: 0.875rem; padding: 8px 12px; background: #fef2f2; border: 1px solid #fecaca; border-radius: 8px; margin-top: -6px; }

/* ─── Chat interface ─────────────────────────────────────── */
.credits-pill {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  background: var(--blue-50);
  color: var(--blue-700);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--blue-100);
  font-weight: 600;
}

.chat-main {
  background: linear-gradient(180deg, var(--white), var(--blue-50));
  min-height: calc(100vh - 65px);
  padding: 24px;
}

.chat-container {
  max-width: 860px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  height: calc(100vh - 130px);
  overflow: hidden;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--gray-100);
  background: var(--white);
}
.chat-user {
  font-size: 0.85rem;
  color: var(--gray-500);
  font-family: ui-monospace, monospace;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: linear-gradient(180deg, var(--white), var(--blue-50));
}

.msg {
  display: flex;
  flex-direction: column;
  max-width: 90%;
}
.msg-user { align-self: flex-end; align-items: flex-end; }
.msg-assistant, .msg-system { align-self: flex-start; }

.msg-body {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  line-height: 1.6;
  word-wrap: break-word;
  white-space: pre-wrap;
}
.msg-user .msg-body {
  background: var(--blue-600);
  color: var(--white);
  border-bottom-right-radius: 4px;
}
.msg-assistant .msg-body {
  background: var(--white);
  border: 1px solid var(--gray-100);
  box-shadow: var(--shadow-sm);
  border-bottom-left-radius: 4px;
  white-space: normal;
}
.msg-system .msg-body {
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  color: var(--gray-700);
}

.msg-body p { margin: 0 0 8px; }
.msg-body p:last-child { margin-bottom: 0; }

.code-block {
  background: #0f172a;
  color: #e2e8f0;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  line-height: 1.5;
  margin: 8px 0;
}
.inline-code {
  background: var(--gray-100);
  color: var(--blue-700);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: ui-monospace, monospace;
  font-size: 0.85em;
}

.msg-meta {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-top: 6px;
  font-family: ui-monospace, monospace;
}

.chat-input-row {
  display: flex;
  gap: 10px;
  padding: 14px 16px;
  background: var(--white);
  border-top: 1px solid var(--gray-100);
  align-items: flex-end;
}
.chat-textarea {
  flex: 1;
  resize: none;
  min-height: 44px;
  max-height: 200px;
  padding: 12px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.4;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.chat-textarea:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}
.chat-send { flex-shrink: 0; }

/* ─── Top-up page (minimalist) ───────────────────────────── */
.topup-main {
  background: linear-gradient(180deg, var(--white), var(--blue-50));
  min-height: calc(100vh - 65px);
  padding: 60px 24px 80px;
}
.topup-container {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}
.topup-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 12px 0 8px;
}
.topup-subtitle {
  color: var(--gray-700);
  max-width: 520px;
  margin: 0 auto 32px;
  font-size: 0.95rem;
  line-height: 1.55;
}
.package-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  text-align: left;
  margin-bottom: 20px;
}
@media (min-width: 720px) {
  .package-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
}
@media (min-width: 1100px) {
  .package-grid { grid-template-columns: repeat(5, 1fr); }
}
.package-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.package-card:hover {
  border-color: var(--blue-500);
  box-shadow: var(--shadow-sm);
}
.package-head {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 6px;
}
.package-name {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.package-php {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.02em;
}
.package-usd {
  font-size: 0.8rem;
  color: var(--blue-700);
  font-weight: 600;
}
.package-rate {
  font-size: 0.7rem;
  color: var(--gray-500);
  font-family: ui-monospace, monospace;
  margin-bottom: 12px;
}
.package-card .btn {
  margin-top: auto;
  padding: 8px 12px;
  font-size: 0.85rem;
  border-radius: var(--radius-full);
}
.package-card .btn-block {
  width: auto;
  align-self: stretch;
}
.package-loading, .package-error {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px;
  color: var(--gray-500);
  font-size: 0.9rem;
}
.topup-note {
  color: var(--gray-500);
  font-size: 0.8rem;
  margin-top: 12px;
}
.checkout-status {
  margin-top: 16px;
  padding: 12px 16px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  color: #b91c1c;
  font-size: 0.875rem;
}

/* ─── Dashboard ─────────────────────────────────────────── */
.dash-main {
  background: linear-gradient(180deg, var(--white), var(--blue-50));
  min-height: calc(100vh - 65px);
  padding: 40px 24px 80px;
}
.dash-container {
  max-width: 1080px;
  margin: 0 auto;
}
.dash-header {
  margin-bottom: 24px;
}
.dash-title {
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.dash-subtitle {
  color: var(--gray-500);
  margin-top: 4px;
  font-size: 0.85rem;
  font-family: ui-monospace, monospace;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.stat-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  font-weight: 600;
  margin-bottom: 8px;
}
.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.02em;
  font-family: ui-monospace, monospace;
}
.stat-note {
  font-size: 0.7rem;
  color: var(--gray-500);
  margin-top: 6px;
}

.dash-section {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
  overflow: hidden;
}
.dash-section-head {
  padding: 14px 20px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.dash-section-head h2 {
  font-size: 0.95rem;
  font-weight: 700;
}
.dash-section-note {
  font-size: 0.75rem;
  color: var(--gray-500);
}
.table-wrap { overflow-x: auto; }

.data-table {
  width: 100%;
  border-collapse: collapse;
}
.data-table th {
  text-align: left;
  padding: 10px 14px;
  background: var(--gray-100);
  color: var(--gray-700);
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.data-table td {
  padding: 10px 14px;
  border-top: 1px solid var(--gray-100);
  color: var(--gray-700);
  font-family: ui-monospace, monospace;
  font-size: 0.78rem;
  white-space: nowrap;
}
.data-table tr:hover td { background: var(--blue-50); }
.data-table .num { text-align: right; }
.table-empty {
  text-align: center !important;
  color: var(--gray-500) !important;
  padding: 32px !important;
  font-family: inherit !important;
  font-size: 0.85rem !important;
}
.mini-code {
  background: var(--gray-100);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.72rem;
}

.status-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.status-pending  { background: #fef3c7; color: #92400e; }
.status-paid     { background: #d1fae5; color: #065f46; }
.status-failed   { background: #fee2e2; color: #991b1b; }

/* ─── Pricing credit badge ──────────────────────────────── */
.price-credit-badge {
  display: inline-block;
  background: var(--blue-50);
  color: var(--blue-700);
  border: 1px solid var(--blue-100);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 16px;
  font-family: ui-monospace, monospace;
}
.price-card-featured .price-credit-badge {
  background: var(--blue-600);
  color: var(--white);
  border-color: var(--blue-600);
}

/* ─── Copy button for code blocks ─────────────────────────── */
.code-block-wrap {
  position: relative;
}
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.72rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  cursor: pointer;
  transition: all 0.15s ease;
  opacity: 0.7;
  z-index: 2;
}
.copy-btn:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
  opacity: 1;
}
.copy-btn.copied {
  background: rgba(16, 185, 129, 0.25);
  color: #6ee7b7;
  border-color: rgba(16, 185, 129, 0.5);
  opacity: 1;
}

/* ── Custom top-up amount card ───────────────────────── */
.package-card-custom {
  border-style: dashed;
}
.custom-input-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--gray-200, #e5e7eb);
  border-radius: 8px;
  padding: 8px 12px;
  background: var(--gray-50, #f9fafb);
  margin: 8px 0 12px;
}
.custom-currency {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-500, #6b7280);
}
.custom-input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 1.1rem;
  font-weight: 600;
  width: 100%;
  color: var(--gray-900, #111827);
  -moz-appearance: textfield;
}
.custom-input::-webkit-outer-spin-button,
.custom-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}