/* ============================================================
   PayNexus — Ultra Premium Apple Aesthetic Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* Apple iOS/macOS Dark Mode Color Palette */
  --bg-900: #000000;
  --bg-800: #1c1c1e;
  --bg-700: #2c2c2e;
  
  --primary: #0a84ff;
  --primary-light: #5ac8fa;
  --primary-glow: rgba(10, 132, 255, 0.4);

  --accent: #30d158;
  --accent-light: #34c759;
  --accent-glow: rgba(48, 209, 88, 0.4);

  --danger: #ff453a;
  --danger-light: #ff6961;
  --warning: #ffd60a;

  --text-100: #ffffff;
  --text-200: #f2f2f7;
  --text-400: #8e8e93;
  --text-600: #48484a;

  --glass: rgba(28, 28, 30, 0.65);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-hover: rgba(44, 44, 46, 0.85);

  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --radius-full: 9999px;

  --shadow-sm: 0 4px 16px rgba(0,0,0,0.3);
  --shadow-md: 0 16px 48px rgba(0,0,0,0.5), inset 0 1px 1px rgba(255,255,255,0.15);
  --shadow-glow-primary: 0 0 32px var(--primary-glow);
  --shadow-glow-accent: 0 0 28px var(--accent-glow);

  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", sans-serif;
}

[data-theme="light"] {
  /* Apple iOS/macOS Light Mode Color Palette */
  --bg-900: #f2f2f7;
  --bg-800: #ffffff;
  --bg-700: #e5e5ea;
  
  --primary: #007aff;
  --primary-light: #0056b3;
  --primary-glow: rgba(0, 122, 255, 0.25);

  --accent: #34c759;
  --accent-light: #248a3d;
  --accent-glow: rgba(52, 199, 89, 0.25);

  --danger: #ff3b30;
  --danger-light: #d60000;
  --warning: #ffcc00;

  --text-100: #000000;
  --text-200: #1c1c1e;
  --text-400: #8e8e93;
  --text-600: #c7c7cc;

  --glass: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-hover: rgba(255, 255, 255, 1);

  --shadow-sm: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-md: 0 20px 50px rgba(0,0,0,0.1), inset 0 1px 0 rgba(255,255,255,1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden; /* Prevent horizontal scroll at root level */
  max-width: 100vw;
}
body {
  font-family: var(--font);
  background: var(--bg-900);
  color: var(--text-100);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  max-width: 100vw;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; outline: none; }
input, textarea, select { font-family: inherit; outline: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-600); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-400); }

/* ── Mesh Background ── */
.bg-orbs {
  position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden;
  background: var(--bg-900);
}
.orb {
  position: absolute; border-radius: 50%;
  filter: blur(120px); opacity: 0.25;
  animation: orbFloat 20s ease-in-out infinite alternate;
}
.orb-1 { width: 60vw; height: 60vw; background: var(--primary); top: -20vh; left: -10vw; animation-delay: 0s; }
.orb-2 { width: 50vw; height: 50vw; background: var(--accent); bottom: -15vh; right: -10vw; animation-delay: -5s; }
.orb-3 { width: 40vw; height: 40vw; background: #bf5af2; top: 40vh; left: 50vw; animation-delay: -9s; opacity: 0.15; }
@keyframes orbFloat {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(10vw, 10vh) scale(1.1); }
}

/* ── Page Wrapper ── */
.page-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
}

/* ── Navbar ── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 3rem;
  background: var(--glass);
  backdrop-filter: saturate(180%) blur(40px);
  -webkit-backdrop-filter: saturate(180%) blur(40px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.nav-logo {
  display: flex; align-items: center; gap: 12px;
  font-weight: 800; font-size: 1.4rem; letter-spacing: -0.03em;
}
.nav-logo .logo-icon {
  width: 40px; height: 40px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; background: white; box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
.nav-logo .logo-icon img { width: 100%; height: 100%; object-fit: contain; }
.nav-logo .logo-text { color: var(--text-100); }

.nav-links { display: flex; align-items: center; gap: 0.5rem; }
.nav-link {
  padding: 0.6rem 1.2rem; border-radius: var(--radius-full);
  font-size: 0.95rem; font-weight: 600; color: var(--text-400);
  transition: var(--transition);
}
.nav-link:hover { color: var(--text-100); background: var(--bg-800); }
.nav-link.active { color: var(--primary); background: var(--primary-glow); }

.nav-user { display: flex; align-items: center; gap: 1rem; }
.nav-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.1rem; color: #fff;
  border: 2px solid var(--glass-border);
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}
.btn-logout {
  padding: 0.5rem 1.2rem; border-radius: var(--radius-full);
  background: var(--bg-800); color: var(--text-200);
  border: 1px solid var(--glass-border);
  font-size: 0.85rem; font-weight: 600;
  transition: var(--transition);
}
.btn-logout:hover { background: var(--danger); color: white; border-color: var(--danger); box-shadow: 0 4px 12px rgba(255,59,48,0.3); }

/* ── Container ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* ── Ultra Premium Cards ── */
.card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  backdrop-filter: saturate(180%) blur(40px);
  -webkit-backdrop-filter: saturate(180%) blur(40px);
  box-shadow: var(--shadow-md);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 24px 60px rgba(0,0,0,0.15), inset 0 1px 0 rgba(255,255,255,0.2); }
.card-glow { box-shadow: var(--shadow-glow-primary); border-color: var(--primary-glow); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  padding: 0.9rem 2rem; border-radius: var(--radius-full);
  font-weight: 700; font-size: 1rem; letter-spacing: -0.01em;
  transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.2s, background 0.2s; 
  cursor: pointer;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px var(--primary-glow);
  border: 1px solid rgba(255,255,255,0.1);
}
.btn-primary:hover { background: var(--primary-light); transform: scale(1.03); box-shadow: 0 8px 24px var(--primary-glow); }
.btn-primary:active { transform: scale(0.97); }

.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-glow);
  border: 1px solid rgba(255,255,255,0.1);
}
.btn-accent:hover { background: var(--accent-light); transform: scale(1.03); box-shadow: 0 8px 24px var(--accent-glow); }
.btn-accent:active { transform: scale(0.97); }

.btn-outline {
  background: var(--bg-800); color: var(--text-100);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}
.btn-outline:hover { background: var(--bg-700); transform: scale(1.03); }
.btn-outline:active { transform: scale(0.97); }

.btn-danger {
  background: var(--danger);
  color: #fff; box-shadow: 0 4px 14px rgba(255,59,48,0.3);
  border: 1px solid rgba(255,255,255,0.1);
}
.btn-danger:hover { background: var(--danger-light); transform: scale(1.03); }
.btn-danger:active { transform: scale(0.97); }

.btn-sm { padding: 0.6rem 1.4rem; font-size: 0.85rem; }
.btn-full { width: 100%; }
.btn[disabled], .btn.loading { opacity: 0.5; pointer-events: none; }

.btn-icon {
  background: var(--bg-800); color: var(--text-200); border: 1px solid var(--glass-border);
  border-radius: 50%; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; transition: var(--transition); box-shadow: var(--shadow-sm);
}
.btn-icon:hover { background: var(--bg-700); color: var(--text-100); transform: scale(1.1); }

/* ── Form ── */
.form-group { display: flex; flex-direction: column; gap: 0.6rem; }
.form-label { font-size: 0.85rem; font-weight: 700; color: var(--text-400); letter-spacing: 0.05em; text-transform: uppercase; }
.form-control {
  width: 100%;
  padding: 1.1rem 1.4rem;
  background: var(--bg-800);
  border: 1.5px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-100);
  font-size: 1.05rem;
  font-weight: 500;
  transition: all 0.2s ease;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-glow); background: var(--bg-700); transform: translateY(-2px); }
.form-control::placeholder { color: var(--text-600); }
.form-error { font-size: 0.85rem; color: var(--danger); display: none; font-weight: 600; margin-top: 0.25rem; }
.form-error.show { display: block; }

/* ── Badges ── */
.badge {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.35rem 0.8rem; border-radius: var(--radius-full);
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.03em;
  box-shadow: var(--shadow-sm);
}
.badge-primary { background: rgba(10,132,255,0.15); color: var(--primary); border: 1px solid rgba(10,132,255,0.3); }
.badge-accent { background: rgba(48,209,88,0.15); color: var(--accent); border: 1px solid rgba(48,209,88,0.3); }
.badge-warning { background: rgba(255,214,10,0.15); color: var(--warning); border: 1px solid rgba(255,214,10,0.3); }
.badge-danger { background: rgba(255,69,58,0.15); color: var(--danger); border: 1px solid rgba(255,69,58,0.3); }

/* ── Section Headings ── */
.section-title {
  font-size: 2rem; font-weight: 900; letter-spacing: -0.04em;
  color: var(--text-100);
  margin-bottom: 0.5rem;
}
.section-sub { font-size: 1rem; color: var(--text-400); margin-bottom: 2rem; font-weight: 500; }

/* ── Stat Cards ── */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; }
.stat-card {
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg); padding: 1.5rem 2rem;
  backdrop-filter: saturate(180%) blur(40px);
  -webkit-backdrop-filter: saturate(180%) blur(40px);
  box-shadow: var(--shadow-md);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s;
}
.stat-card:hover { transform: translateY(-4px); box-shadow: 0 24px 50px rgba(0,0,0,0.15), inset 0 1px 0 rgba(255,255,255,0.2); border-color: var(--glass-hover); }
.stat-label { font-size: 0.85rem; font-weight: 700; color: var(--text-400); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.75rem; }
.stat-value { font-size: 2.2rem; font-weight: 900; letter-spacing: -0.04em; color: var(--text-100); }
.stat-value.green { color: var(--accent); }
.stat-value.purple { color: var(--primary); }
.stat-icon { font-size: 2rem; margin-bottom: 1rem; }

/* ── Toast ── */
#toast-container { position: fixed; bottom: 2rem; right: 2rem; z-index: 9999; display: flex; flex-direction: column; gap: 1rem; }
.toast {
  display: flex; align-items: center; gap: 1rem;
  padding: 1.25rem 1.75rem; border-radius: var(--radius-lg);
  font-size: 1rem; font-weight: 600;
  background: var(--glass);
  backdrop-filter: saturate(180%) blur(40px);
  -webkit-backdrop-filter: saturate(180%) blur(40px);
  border: 1px solid var(--glass-border);
  min-width: 320px; max-width: 420px;
  animation: toastIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 20px 40px rgba(0,0,0,0.2);
  color: var(--text-100);
}
.toast.success { border-left: 6px solid var(--accent); }
.toast.error { border-left: 6px solid var(--danger); }
.toast.info { border-left: 6px solid var(--primary); }
@keyframes toastIn { from { opacity: 0; transform: translateX(50px) scale(0.9); } to { opacity: 1; transform: translateX(0) scale(1); } }

/* ── Modal ── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,0.5); backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex; align-items: center; justify-content: center;
  padding: 1rem; opacity: 0; pointer-events: none; transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--bg-800); border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl); padding: 3rem; width: 100%; max-width: 520px;
  transform: scale(0.9) translateY(20px); transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 40px 100px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.1);
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 2rem; }
.modal-title { font-size: 1.4rem; font-weight: 800; letter-spacing: -0.02em; }
.btn-close { background: var(--bg-700); border: 1px solid var(--glass-border); border-radius: 50%; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; color: var(--text-400); font-size: 1.2rem; transition: var(--transition); box-shadow: var(--shadow-sm); }
.btn-close:hover { background: var(--bg-600); color: var(--text-100); transform: scale(1.1); }

/* ── Empty State ── */
.empty-state { text-align: center; padding: 4rem 2rem; color: var(--text-400); }
.empty-state .empty-icon { font-size: 4rem; margin-bottom: 1.5rem; opacity: 0.8; }
.empty-state p { font-size: 1.1rem; font-weight: 500; }

/* ── List Items ── */
.list-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 1.5rem; border-radius: var(--radius-lg);
  background: var(--bg-800); border: 1px solid transparent;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s, background 0.3s; gap: 1rem;
  margin-bottom: 0.75rem;
}
.list-item:hover { background: var(--bg-700); border-color: var(--glass-border); transform: scale(1.02); box-shadow: var(--shadow-sm); }
.list-item-left { display: flex; align-items: center; gap: 1rem; flex: 1; min-width: 0; }
.list-avatar {
  width: 48px; height: 48px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1rem; color: #fff;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}
.list-name { font-weight: 700; font-size: 1.05rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text-100); }
.list-sub { font-size: 0.9rem; color: var(--text-400); margin-top: 0.2rem; font-weight: 500; }
.list-right { display: flex; align-items: center; gap: 0.75rem; flex-shrink: 0; }

/* ── Divider ── */
.divider { height: 1px; background: var(--glass-border); margin: 1.5rem 0; }

/* ── Page Header (inner pages) ── */
.page-header { padding-top: 2.5rem; padding-bottom: 1.75rem; }

/* ── Loading Spinner ── */
.spinner {
  width: 24px; height: 24px; border: 3px solid rgba(255,255,255,0.2);
  border-top-color: var(--primary); border-radius: 50%;
  animation: spin 0.8s cubic-bezier(0.4, 0, 0.2, 1) infinite; display: inline-block;
}
[data-theme="light"] .spinner { border-top-color: var(--primary); border-color: rgba(0,0,0,0.1); }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Tab Bar ── */
.tab-bar { 
  display: flex; gap: 0.4rem; background: var(--bg-800); border: 1px solid var(--glass-border); 
  border-radius: var(--radius-full); padding: 0.4rem; margin-bottom: 2rem; 
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
}
.tab-btn { 
  flex: 1; padding: 0.8rem 1.2rem; border-radius: var(--radius-full); font-size: 0.95rem; 
  font-weight: 700; color: var(--text-400); background: transparent; 
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1); 
}
.tab-btn:hover { color: var(--text-200); }
.tab-btn.active { 
  background: var(--bg-700); color: var(--text-100); 
  box-shadow: 0 4px 12px rgba(0,0,0,0.1); border: 1px solid var(--glass-border); 
  transform: scale(1.02);
}

/* ── Amount Display ── */
.amount-large {
  font-size: 3rem; font-weight: 900; letter-spacing: -0.04em;
  background: linear-gradient(90deg, var(--text-100), var(--text-200));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.amount-currency { font-size: 1.5rem; font-weight: 800; vertical-align: super; line-height: 1; margin-right: 0.2rem; color: var(--text-100); }

/* ── Auth Page ── */
.auth-page {
  min-height: 100vh; display: grid; place-items: center; padding: 2rem;
}
.auth-card {
  width: 100%; max-width: 480px;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl); padding: 3.5rem 3rem;
  backdrop-filter: saturate(180%) blur(40px);
  -webkit-backdrop-filter: saturate(180%) blur(40px);
  box-shadow: var(--shadow-md), 0 30px 60px rgba(0,0,0,0.2);
  animation: authCardIn 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes authCardIn { from { transform: scale(0.95) translateY(30px); opacity: 0; } to { transform: scale(1) translateY(0); opacity: 1; } }
.auth-logo { text-align: center; margin-bottom: 2.5rem; }
.auth-logo .logo-icon-large {
  width: 80px; height: 80px; border-radius: 20px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.5rem; overflow: hidden; background: white;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.auth-logo .logo-icon-large img { width: 100%; height: 100%; object-fit: contain; }
.auth-title { font-size: 2rem; font-weight: 900; text-align: center; letter-spacing: -0.03em; color: var(--text-100); }
.auth-sub { font-size: 1.05rem; color: var(--text-400); text-align: center; margin-top: 0.5rem; font-weight: 500; }
.auth-form { display: flex; flex-direction: column; gap: 1.4rem; margin-top: 2.5rem; }
.auth-switch { text-align: center; font-size: 1rem; color: var(--text-400); margin-top: 2rem; font-weight: 500; }
.auth-switch a { color: var(--primary); font-weight: 700; }
.auth-switch a:hover { text-decoration: underline; color: var(--primary-light); }
.role-selector { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.role-card {
  padding: 1.5rem 1rem; border-radius: var(--radius-lg); border: 1.5px solid var(--glass-border);
  background: var(--bg-800); cursor: pointer; transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s; text-align: center;
  box-shadow: var(--shadow-sm);
}
.role-card:hover { transform: translateY(-4px); border-color: var(--primary-glow); box-shadow: 0 12px 24px rgba(0,0,0,0.1); }
.role-card.selected { border-color: var(--primary); background: var(--bg-700); box-shadow: 0 0 0 3px var(--primary-glow), var(--shadow-md); transform: scale(1.02); }
.role-card .role-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.role-card .role-name { font-size: 1.05rem; font-weight: 800; color: var(--text-100); }
.role-card .role-desc { font-size: 0.85rem; color: var(--text-400); margin-top: 0.25rem; }

/* ── Dashboard Layout ── */
.dash-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
@media (max-width: 768px) { .dash-grid { grid-template-columns: 1fr; } }
.dash-main { display: flex; flex-direction: column; gap: 2rem; }

/* ── Payment Methods ── */
.method-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.method-card {
  padding: 2rem 1.5rem; border-radius: var(--radius-lg);
  background: var(--glass); border: 1.5px solid var(--glass-border);
  cursor: pointer; transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s; text-align: center;
  backdrop-filter: saturate(180%) blur(40px);
  -webkit-backdrop-filter: saturate(180%) blur(40px);
  box-shadow: var(--shadow-sm);
}
.method-card:hover { border-color: var(--primary-glow); transform: translateY(-4px); box-shadow: 0 20px 40px rgba(0,0,0,0.15); }
.method-card.active { border-color: var(--primary); background: var(--bg-700); box-shadow: 0 0 0 3px var(--primary-glow), var(--shadow-md); transform: scale(1.02); }
.method-icon { font-size: 3rem; margin-bottom: 1rem; }
.method-name { font-weight: 800; font-size: 1.1rem; color: var(--text-100); }
.method-desc { font-size: 0.9rem; color: var(--text-400); margin-top: 0.4rem; }

/* ── Progress Bar ── */
.progress-bar { height: 8px; background: var(--bg-600); border-radius: 4px; overflow: hidden; box-shadow: inset 0 1px 2px rgba(0,0,0,0.1); }
.progress-fill { height: 100%; border-radius: 4px; background: linear-gradient(90deg, var(--primary), var(--primary-light)); transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1); }

/* ── Footer ── */
.footer {
  padding: 4rem 2rem;
  text-align: center;
  border-top: 1px solid var(--glass-border);
  margin-top: 5rem;
  color: var(--text-400);
  font-size: 0.95rem;
  background: var(--bg-900);
}
.footer-text { font-weight: 600; letter-spacing: 0.02em; }

/* ── Password Strength ── */
.password-strength-meter {
  height: 6px;
  background: var(--bg-600);
  border-radius: 3px;
  margin-top: 0.75rem;
  overflow: hidden;
  display: flex; gap: 4px;
}
.strength-segment {
  flex: 1; height: 100%; transition: var(--transition);
  background: transparent; border-radius: 3px;
}
.strength-text {
  font-size: 0.8rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.05em; margin-top: 0.5rem; display: block; color: var(--text-400);
}
.strength-weak { background: var(--danger); box-shadow: 0 0 10px var(--danger); }
.strength-medium { background: var(--warning); box-shadow: 0 0 10px var(--warning); }
.strength-strong { background: var(--accent); box-shadow: 0 0 10px var(--accent); }

/* ── General Overrides ── */
input[type="date"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: 0.5;
  transition: var(--transition);
}
input[type="date"]::-webkit-calendar-picker-indicator:hover {
  opacity: 1;
}

/* Approve specific styling overrides */
.approve-card {
  margin-bottom: 2rem;
  border: 1px solid var(--glass-border);
  background: var(--glass);
  border-radius: var(--radius-xl);
  overflow: hidden;
  backdrop-filter: saturate(180%) blur(40px);
  -webkit-backdrop-filter: saturate(180%) blur(40px);
  box-shadow: var(--shadow-md);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s;
}
.approve-card:hover { transform: translateY(-4px); box-shadow: 0 24px 60px rgba(0,0,0,0.15), inset 0 1px 0 rgba(255,255,255,0.2); border-color: var(--primary-glow); }
.approve-card-header {
  padding: 1.5rem 2rem;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; border-bottom: 1px solid var(--glass-border);
}
.approve-card-body { padding: 1.5rem 2rem; }

/* Dashboard Wallet Hero */
.wallet-hero {
  background: var(--bg-800);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 4vw, 3rem) clamp(1.25rem, 5vw, 4rem);
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem; margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
  position: relative; overflow: hidden;
  width: 100%; /* Prevent overflow */
  box-sizing: border-box;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.wallet-hero:hover { transform: translateY(-4px); box-shadow: 0 24px 60px rgba(0,0,0,0.15); }
.wallet-hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at top right, var(--primary-glow) 0%, transparent 70%);
  pointer-events: none; opacity: 0.5;
}

/* ══════════════════════════════════════════
   MOBILE RESPONSIVE — Full System
   ══════════════════════════════════════════ */

/* ══ KEY FIX: backdrop-filter on .navbar creates a new stacking context
   that traps position:fixed children. On mobile we remove backdrop-filter
   from .navbar so .nav-links can correctly position:fixed to the viewport. ══ */

/* ── Top Navbar (mobile) ── */
@media (max-width: 900px) {
  /* ── Prevent all horizontal overflow on mobile ── */
  html, body {
    overflow-x: hidden !important;
    max-width: 100vw !important;
  }
  .page-wrapper, .container, .card, .stat-card, .modal {
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .navbar {
    padding: 0.6rem 1rem;
    flex-wrap: nowrap;
    gap: 0.5rem;
    /* !! CRITICAL: Remove backdrop-filter so nav-links position:fixed works !! */
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    background: rgba(18, 18, 20, 0.96) !important;
    border-bottom: 1px solid var(--glass-border);
    width: 100%;
    box-sizing: border-box;
  }
  [data-theme="light"] .navbar {
    background: rgba(242, 242, 247, 0.97) !important;
  }

  /* ── Bottom fixed tab bar ── */
  .nav-links {
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    top: auto !important;
    background: rgba(18, 18, 20, 0.96) !important;
    backdrop-filter: saturate(180%) blur(32px) !important;
    -webkit-backdrop-filter: saturate(180%) blur(32px) !important;
    border-top: 1px solid var(--glass-border) !important;
    border-bottom: none !important;
    display: flex !important;
    justify-content: space-around !important;
    align-items: stretch !important;
    padding: 0 !important;
    padding-bottom: env(safe-area-inset-bottom, 0px) !important;
    z-index: 9999 !important;
    flex-wrap: nowrap !important;
    gap: 0 !important;
    box-shadow: 0 -4px 24px rgba(0,0,0,0.25) !important;
  }
  [data-theme="light"] .nav-links {
    background: rgba(255, 255, 255, 0.97) !important;
    box-shadow: 0 -2px 16px rgba(0,0,0,0.08) !important;
  }

  /* ── Each nav link = icon + label tab ── */
  .nav-link {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 0.2rem !important;
    font-size: 0.6rem !important;
    font-weight: 600 !important;
    padding: 0.6rem 0.25rem !important;
    white-space: nowrap;
    border-radius: 0 !important;
    flex: 1;
    min-width: 0;
    color: var(--text-400) !important;
    transition: color 0.2s, background 0.2s !important;
    min-height: 56px !important;
    background: transparent !important;
  }
  .nav-link:hover {
    background: rgba(255,255,255,0.04) !important;
    color: var(--text-200) !important;
  }
  .nav-link.active {
    color: var(--primary) !important;
    background: rgba(10,132,255,0.08) !important;
  }
  .nav-link svg,
  .nav-link i[data-lucide] svg,
  .nav-link > i svg {
    width: 22px !important;
    height: 22px !important;
    flex-shrink: 0;
    stroke-width: 1.8 !important;
  }
  .nav-link.active svg,
  .nav-link.active i[data-lucide] svg {
    stroke: var(--primary) !important;
  }

  /* Body padding so content doesn't go under bottom bar */
  body { padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px)) !important; }

  /* ── Top-bar: compact user controls ── */
  .nav-user { gap: 0.5rem; flex-shrink: 0; }
  /* Hide logout text on mobile, keep as icon-only button */
  .btn-logout {
    font-size: 0 !important; /* hide text */
    padding: 0 !important;
    width: 34px !important;
    height: 34px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: var(--bg-800) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 50% !important;
  }
  /* Show a logout icon via ::before */
  .btn-logout::before {
    content: '↩';
    font-size: 0.95rem;
    line-height: 1;
  }
  /* Theme toggle: ensure it renders cleanly even with "??" placeholder */
  #theme-toggle {
    width: 34px !important;
    height: 34px !important;
    font-size: 1rem !important;
    border-radius: 50% !important;
  }
  .nav-avatar { width: 34px; height: 34px; font-size: 0.85rem; }
}

/* ── Tablet / Phablet (≤ 768px) ── */
@media (max-width: 768px) {
  /* ────────────────────────────────────── */
  /*  BREATHING ROOM: 20px side padding + vertical gaps   */
  /* ────────────────────────────────────── */
  .container { padding: 0 1.25rem; }

  /* ── Grids → single column with comfortable gap ── */
  .dash-grid,
  .method-grid,
  .stat-grid,
  .role-selector,
  .sections-grid,
  .pay-layout,
  .groups-layout,
  .receiver-layout { grid-template-columns: 1fr !important; gap: 1rem; }

  /* ── Stat grid: 2-col with gap ── */
  .stat-grid { grid-template-columns: 1fr 1fr !important; gap: 0.875rem !important; margin-bottom: 1rem; }

  /* ── Span-full overrides inside grids ── */
  .card[style*="grid-column"] { grid-column: 1 !important; }

  /* ── Card padding reduction ── */
  .card { padding: 1.25rem !important; margin-bottom: 0; }
  .auth-card { padding: 2rem 1.5rem !important; }
  .method-card { padding: 1.25rem 1rem !important; }
  .approve-card-header,
  .approve-card-body { padding: 1rem 1.25rem !important; }

  /* ── Wallet Hero ── */
  .wallet-hero {
    padding: 1.25rem !important;
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 1rem;
    margin-bottom: 1rem !important;
  }
  .wallet-actions {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    width: 100%;
    gap: 0.75rem;
  }
  /* If 3 buttons, last one spans full */
  .wallet-actions .btn:only-child,
  .wallet-actions .btn:last-child:nth-child(odd) {
    grid-column: 1 / -1;
  }
  .wallet-actions .btn { justify-content: center; }
  .wallet-amount { font-size: 2.4rem !important; }

  /* ── Headings ── */
  .section-title { font-size: 1.4rem !important; }
  .auth-title { font-size: 1.75rem !important; }
  .stat-value { font-size: 1.6rem !important; }

  /* ── Modal ── */
  .modal {
    padding: 1.5rem !important;
    border-radius: var(--radius-lg) !important;
    max-width: calc(100vw - 2rem) !important;
  }

  /* ── Toast — above bottom nav ── */
  #toast-container {
    bottom: calc(72px + env(safe-area-inset-bottom, 0px)) !important;
    right: 1rem !important;
    left: 1rem !important;
    align-items: stretch;
  }
  .toast {
    min-width: unset !important;
    max-width: 100% !important;
    width: 100% !important;
  }

  /* ── Page header ── */
  .page-header { padding: 1.5rem 0 1rem; }

  /* ── Analytics header ── */
  .analytics-header { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .analytics-header > div:last-child { flex-wrap: wrap; width: 100%; gap: 0.5rem; }
  .range-tabs { flex-wrap: nowrap; overflow-x: auto; }
  .kpi-grid { grid-template-columns: 1fr 1fr !important; gap: 0.75rem; }
  .kpi-value { font-size: 1.5rem !important; }

  /* ── Groups layout ── */
  .groups-layout { display: flex !important; flex-direction: column !important; }
  #group-detail-panel { min-height: 200px; }

  /* ── Approve tab-bar ── */
  .tab-bar { overflow-x: auto; flex-wrap: nowrap; padding: 0.3rem; max-width: 100%; }
  .tab-btn { white-space: nowrap; padding: 0.6rem 0.85rem; font-size: 0.82rem; }

  /* ── Approve actions ── */
  .approve-actions { flex-wrap: wrap; }
  .approve-actions .btn { flex: 1; min-width: 100px; justify-content: center; }

  /* ── Split info grid ── */
  .split-info { grid-template-columns: 1fr 1fr !important; }

  /* ── Pay layout ── */
  .pay-layout { display: flex !important; flex-direction: column !important; }

  /* ── Receiver layout ── */
  .receiver-layout { display: flex !important; flex-direction: column !important; }

  /* ── Method grid ── */
  .method-grid { grid-template-columns: 1fr 1fr !important; }
}

/* ── Small phones (≤ 480px) ── */
@media (max-width: 480px) {
  /* Hide logo text to save space */
  .nav-logo .logo-text { display: none !important; }

  /* Auth card ultra-compact */
  .auth-card { padding: 1.5rem 1rem !important; }
  .auth-logo .logo-icon-large { width: 64px; height: 64px; }
  .auth-title { font-size: 1.5rem !important; }
  .auth-sub { font-size: 0.9rem; }

  /* List items stack vertically */
  .list-item {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.6rem;
  }
  .list-right { width: 100%; justify-content: flex-start; flex-wrap: wrap; gap: 0.5rem; }

  /* KPIs single column on tiny screens */
  .kpi-grid { grid-template-columns: 1fr 1fr !important; }
  .kpi-value { font-size: 1.6rem !important; }

  /* Method grid single column */
  .method-grid { grid-template-columns: 1fr !important; }

  /* Tab bar: scrollable, don't stack */
  .tab-bar { flex-direction: row; border-radius: var(--radius-full); }

  /* Wallet amount compact */
  .wallet-amount { font-size: 2rem !important; }

  /* Approve actions two-column grid */
  .approve-actions { display: grid !important; grid-template-columns: 1fr 1fr !important; gap: 0.75rem; }
  .approve-actions .btn { width: 100% !important; justify-content: center; }

  /* Reduce card padding further */
  .card { padding: 1rem !important; }
  .stat-card { padding: 1rem 1.25rem !important; }

  /* Page header shrink */
  .page-header { padding: 1rem 0 0.75rem; }
  .section-title { font-size: 1.25rem !important; }

  /* Landing page buttons stack */
  .landing-btns { flex-direction: column; align-items: center; }
  .landing-btns .btn { width: 100%; max-width: 280px; }

  /* Features wrap tighter */
  .features { gap: 0.75rem; }
  .feature { max-width: 100%; width: calc(50% - 0.375rem); }

  /* Reduce orb size on mobile for performance */
  .orb-1 { width: 80vw; height: 80vw; }
  .orb-2 { width: 70vw; height: 70vw; }
  .orb-3 { width: 60vw; height: 60vw; }

  /* Stat grid: 2 columns on small phones */
  .stat-grid { grid-template-columns: 1fr 1fr !important; }
  .stat-value { font-size: 1.4rem !important; }
}

/* ── Landscape phone fix ── */
@media (max-width: 900px) and (orientation: landscape) {
  body { padding-bottom: calc(52px + env(safe-area-inset-bottom, 0px)) !important; }
  .nav-link { min-height: 48px !important; padding: 0.4rem 0.25rem !important; }
  .nav-link span { display: none; }
}

/* ── Touch device improvements ── */
@media (hover: none) and (pointer: coarse) {
  .btn { min-height: 46px; }
  .form-control { min-height: 46px; }
  .tab-btn { min-height: 42px; }

  /* Disable hover transform effects on touch — they feel broken */
  .card:hover,
  .list-item:hover,
  .stat-card:hover,
  .method-card:hover,
  .approve-card:hover,
  .btn-primary:hover,
  .btn-accent:hover,
  .btn-outline:hover { transform: none !important; }
}