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

:root {
  --primary: #9D4EDD;
  --primary-dark: #7B2CBF;
  --primary-light: #C77DFF;
  --accent: #E0AAFF;
  --dark: #000000;
  --dark-2: #050505;
  --dark-3: #0A0A0A;
  --dark-4: #111111;
  --text: #FFFFFF;
  --text-muted: #888888;
  --border: #1A0A30;
  --success: #00b894;
  --danger: #e74c3c;
  --radius: 12px;
  --shadow: 0 20px 60px rgba(0,0,0,0.4);
}

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.hidden { display: none !important; }

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 20px rgba(157, 78, 221, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(157, 78, 221, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-light);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}
.btn-ghost:hover { color: var(--text); }

.btn-large { padding: 16px 32px; font-size: 16px; }
.btn-small { padding: 6px 14px; font-size: 12px; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon {
  background: var(--dark-4);
  border: 1px solid var(--border);
  color: var(--accent);
  width: 42px;
  height: 42px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}
.btn-icon:hover { background: var(--primary); color: white; border-color: var(--primary); }

/* NAVBAR */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.3s;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled { border-bottom-color: var(--border); }

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
}
.nav-logo i { color: var(--primary); font-size: 24px; }

.logo-img {
  height: 40px;
  width: auto;
  border-radius: 8px;
}

/* AUTH MODAL */
.auth-modal {
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 36px 32px;
  width: 100%;
  max-width: 460px;
  position: relative;
  box-shadow: var(--shadow), 0 0 80px rgba(157, 78, 221, 0.1);
  overflow: hidden;
}

.auth-glow {
  position: absolute;
  top: -60%;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(157, 78, 221, 0.25) 0%, rgba(199, 125, 255, 0.1) 40%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: authGlowPulse 4s ease-in-out infinite;
}

@keyframes authGlowPulse {
  0%, 100% { opacity: 0.6; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.1); }
}

.auth-header {
  text-align: center;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

.auth-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 26px;
  color: white;
  box-shadow: 0 0 30px rgba(157, 78, 221, 0.4);
  animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.auth-title {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.5px;
  margin-bottom: 6px;
  line-height: 1.2;
}

.auth-title-of {
  font-weight: 400;
  font-style: italic;
  color: var(--accent);
  font-size: 1.1rem;
}

.auth-tagline {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.auth-tabs .tab i {
  margin-right: 6px;
  font-size: 0.85rem;
}

.auth-form {
  position: relative;
  z-index: 1;
}

.auth-form .form-group label i {
  margin-right: 4px;
  font-size: 0.8rem;
  color: var(--primary-light);
}

.auth-submit {
  margin-top: 4px;
  padding: 14px 24px;
  font-size: 15px;
  letter-spacing: 0.3px;
}

.auth-submit i {
  margin-right: 6px;
}

.auth-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 0.72rem;
  color: var(--text-muted);
  opacity: 0.6;
  position: relative;
  z-index: 1;
}

.auth-footer i {
  margin-right: 4px;
  color: var(--success);
}

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--text); }

.nav-auth, .nav-user { display: flex; gap: 12px; align-items: center; }
.nav-user span { color: var(--text-muted); font-size: 14px; }

.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 24px; cursor: pointer; }

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: 120px 24px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(157, 78, 221, 0.15) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 50%, rgba(199, 125, 255, 0.08) 0%, transparent 40%);
}

.hero-content {
  position: relative;
  max-width: 800px;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.stat { text-align: center; }
.stat-number { display: block; font-size: 1.5rem; font-weight: 800; color: var(--accent); }
.stat-label { font-size: 0.85rem; color: var(--text-muted); }

/* FEATURES */
.features {
  padding: 120px 0;
  background: var(--dark-2);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 64px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  transition: all 0.3s;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 12px 40px rgba(157, 78, 221, 0.15);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: white;
  margin-bottom: 20px;
}

.feature-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.feature-card p { color: var(--text-muted); font-size: 0.95rem; }

/* ABOUT */
.about { padding: 120px 0; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-content h2 { font-size: 2.5rem; font-weight: 800; margin-bottom: 24px; }
.about-content p { color: var(--text-muted); margin-bottom: 20px; font-size: 1.05rem; }
.about-content .btn { margin-top: 16px; }

.about-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.vault-animation {
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--dark-3), var(--dark-4));
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  color: var(--primary-light);
  animation: pulse 3s ease-in-out infinite;
  box-shadow: 0 0 80px rgba(157, 78, 221, 0.2);
}

@keyframes pulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 80px rgba(157, 78, 221, 0.2); }
  50% { transform: scale(1.05); box-shadow: 0 0 120px rgba(157, 78, 221, 0.35); }
}

/* FOOTER */
.footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p { color: var(--text-muted); margin-top: 12px; }

.footer-links h4 { margin-bottom: 16px; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; }
.footer-links a { display: block; color: var(--text-muted); text-decoration: none; padding: 4px 0; transition: color 0.3s; }
.footer-links a:hover { color: var(--text); }

.footer-bottom { text-align: center; padding-top: 32px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 0.85rem; }

/* MODAL */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 24px;
}

.modal {
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 440px;
  position: relative;
  box-shadow: var(--shadow);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  transition: color 0.3s;
}
.modal-close:hover { color: var(--text); }

.modal-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.tab {
  flex: 1;
  padding: 12px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.3s;
}
.tab.active { color: var(--primary-light); border-bottom-color: var(--primary); }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 6px; }
.form-group input, .form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.3s;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}
.form-group textarea { resize: vertical; min-height: 80px; }

.form-error {
  background: rgba(231, 76, 60, 0.1);
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
}

.password-input-group { display: flex; gap: 8px; }
.password-input-group input { flex: 1; }

/* DASHBOARD */
.dashboard {
  padding: 100px 24px 40px;
  max-width: 900px;
  margin: 0 auto;
}

.dash-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}
.dash-header h2 { font-size: 1.8rem; display: flex; align-items: center; gap: 12px; }
.dash-header h2 i { color: var(--primary-light); }
.dash-actions { display: flex; gap: 12px; }

.dash-search {
  position: relative;
  margin-bottom: 32px;
}
.dash-search i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}
.dash-search input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 15px;
}
.dash-search input:focus { outline: none; border-color: var(--primary); }

/* PASSWORD CARDS */
.pw-card {
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.3s;
}
.pw-card:hover { border-color: var(--primary); transform: translateX(4px); }

.pw-info { flex: 1; }
.pw-info h4 { font-size: 1rem; margin-bottom: 4px; }
.pw-info p { color: var(--text-muted); font-size: 0.85rem; }

.pw-revealed {
  display: block;
  margin-top: 8px;
  font-family: monospace;
  color: var(--primary-light);
  font-size: 13px;
  word-break: break-all;
  background: var(--dark-2);
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.pw-actions { display: flex; gap: 8px; }
.pw-actions button {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--dark-4);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}
.pw-actions button:hover { color: var(--primary-light); border-color: var(--primary); }
.pw-actions button.delete:hover { color: var(--danger); border-color: var(--danger); }

.empty-vault {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
}
.empty-vault i { font-size: 48px; margin-bottom: 16px; color: var(--dark-4); }
.empty-vault p { font-size: 1.1rem; }

/* LOCK SCREEN */
.lock-screen {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}

.lock-card {
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px;
  text-align: center;
  max-width: 420px;
  width: 100%;
  box-shadow: var(--shadow);
}

.lock-icon {
  font-size: 48px;
  color: var(--primary-light);
  margin-bottom: 20px;
}

.lock-logo {
  height: 80px;
  width: auto;
  margin-bottom: 20px;
  border-radius: 12px;
}

.lock-card h2 { margin-bottom: 8px; }
.lock-card > p { color: var(--text-muted); margin-bottom: 28px; font-size: 0.95rem; }
.lock-card form .form-group { text-align: left; }

.btn-danger { border-color: var(--danger) !important; color: var(--danger) !important; }
.btn-danger:hover { background: var(--danger) !important; color: white !important; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-links, .nav-auth, .nav-user { display: none; }
  .nav-toggle { display: block; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats { gap: 24px; }
  .dash-header { flex-direction: column; align-items: flex-start; }
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--dark-3);
  border: 1px solid var(--success);
  color: var(--text);
  padding: 14px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  z-index: 9999;
  animation: slideIn 0.3s ease;
}
.toast.error { border-color: var(--danger); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}


/* Dashboard Tabs */
.dash-tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 0; }
.dash-tabs button { background: none; border: none; color: #888; padding: 10px 16px; cursor: pointer; font-size: 0.85rem; border-bottom: 2px solid transparent; transition: all 0.2s; }
.dash-tabs button:hover { color: #fff; }
.dash-tabs button.active { color: #9D4EDD; border-bottom-color: #9D4EDD; }

/* Notes */
.note-preview { color: #999; font-size: 0.8rem; margin-top: 4px; white-space: pre-wrap; }

/* Invites Section */
.invites-section { margin-bottom: 20px; padding: 12px; background: rgba(102,126,234,0.05); border: 1px solid rgba(102,126,234,0.2); border-radius: 10px; }
.invites-section h3 { font-size: 0.9rem; margin-bottom: 8px; color: #9D4EDD; }

/* Settings Panel */
.settings-panel { max-width: 700px; margin: 0 auto; padding: 24px 0; }
.settings-section { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; padding: 24px; margin-bottom: 20px; }
.settings-section h3 { margin: 0 0 16px; font-size: 1.1rem; color: var(--accent); }
.settings-section .form-group { margin-bottom: 14px; }
.settings-section .form-group label { display: block; font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 4px; }
.settings-section .form-group input { width: 100%; padding: 10px 14px; background: rgba(0,0,0,0.3); border: 1px solid rgba(255,255,255,0.1); border-radius: 8px; color: #fff; font-size: 0.95rem; }
.settings-section .form-group input:focus { border-color: var(--accent); outline: none; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }
.admin-users-list .pw-card { margin-bottom: 8px; }