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

:root {
  --primary-color: #1a365d;
  --secondary-color: #3182ce;
  --accent-color: #ed8936;
  --bg-color: #f7fafc;
  --text-color: #2d3748;
  --card-bg: rgba(255, 255, 255, 0.8);
  --input-bg: rgba(255, 255, 255, 0.9);
  --border-color: #e2e8f0;
  --error-color: #e53e3e;
  --success-color: #38a169;
}

body.dark-mode {
  --primary-color: #90cdf4;
  --secondary-color: #63b3ed;
  --accent-color: #fbd38d;
  --bg-color: #1a202c;
  --text-color: #e2e8f0;
  --card-bg: rgba(45, 55, 72, 0.8);
  --input-bg: rgba(26, 32, 44, 0.9);
  --border-color: #4a5568;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Cairo', sans-serif; }
body { background-color: var(--bg-color); color: var(--text-color); min-height: 100vh; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; transition: background-color 0.3s, color 0.3s; }
a { text-decoration: none; color: var(--secondary-color); transition: color 0.3s; }
a:hover { color: var(--primary-color); }
body.dark-mode a:hover { color: var(--accent-color); }

.bg-shapes { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; overflow: hidden; background: linear-gradient(135deg, var(--bg-color) 0%, #e2e8f0 100%); }
body.dark-mode .bg-shapes { background: linear-gradient(135deg, var(--bg-color) 0%, #2d3748 100%); }
.shape { position: absolute; background: linear-gradient(45deg, var(--secondary-color), var(--primary-color)); border-radius: 50%; filter: blur(50px); opacity: 0.4; animation: float 10s infinite ease-in-out alternate; }
.shape:nth-child(1) { width: 300px; height: 300px; top: -100px; right: -100px; animation-delay: 0s; }
.shape:nth-child(2) { width: 400px; height: 400px; bottom: -150px; left: -100px; background: linear-gradient(45deg, var(--accent-color), var(--secondary-color)); animation-delay: -5s; }

@keyframes float { 0% { transform: translateY(0) scale(1); } 100% { transform: translateY(50px) scale(1.1); } }

.login-container { width: 100%; max-width: 450px; padding: 2rem; position: relative; z-index: 1; animation: slideUp 0.6s ease-out forwards; }
@keyframes slideUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

.glass-card { background: var(--card-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 20px; padding: 2.5rem 2rem; box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1); max-height: 90vh; overflow-y: auto; }
body.dark-mode .glass-card { border: 1px solid rgba(255, 255, 255, 0.05); box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3); }

/* Custom scrollbar for card */
.glass-card::-webkit-scrollbar { width: 6px; }
.glass-card::-webkit-scrollbar-track { background: transparent; }
.glass-card::-webkit-scrollbar-thumb { background-color: rgba(0,0,0,0.2); border-radius: 10px; }
body.dark-mode .glass-card::-webkit-scrollbar-thumb { background-color: rgba(255,255,255,0.2); }

.card-header { text-align: center; margin-bottom: 2rem; }
.card-header h1 { font-size: 1.8rem; color: var(--primary-color); margin-bottom: 0.5rem; }
body.dark-mode .card-header h1 { color: var(--secondary-color); }
.card-header p { font-size: 0.9rem; color: var(--text-color); opacity: 0.8; }
.logo-icon { font-size: 3rem; margin-bottom: 1rem; display: inline-block; animation: fade-in 1s ease; }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; font-size: 0.9rem; }
.form-control { width: 100%; padding: 0.8rem 1rem; border-radius: 10px; border: 1px solid var(--border-color); background: var(--input-bg); color: var(--text-color); font-size: 1rem; transition: all 0.3s; }
.form-control:focus { outline: none; border-color: var(--secondary-color); box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.2); }
.error-msg { color: var(--error-color); font-size: 0.8rem; margin-top: 0.3rem; display: none; }
.form-control.is-invalid { border-color: var(--error-color); }
.form-control.is-invalid + .error-msg { display: block; }

.btn { width: 100%; padding: 0.9rem; border: none; border-radius: 10px; font-size: 1.1rem; font-weight: 700; cursor: pointer; transition: all 0.3s; display: flex; align-items: center; justify-content: center; gap: 0.5rem; position: relative; overflow: hidden; }
.btn-primary { background: linear-gradient(45deg, var(--primary-color), var(--secondary-color)); color: white; box-shadow: 0 4px 15px rgba(26, 54, 93, 0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26, 54, 93, 0.4); }

.spinner { width: 20px; height: 20px; border: 3px solid rgba(255,255,255,0.3); border-radius: 50%; border-top-color: white; animation: spin 1s linear infinite; display: none; }
.btn.loading .spinner { display: inline-block; }
.btn.loading .btn-text { opacity: 0.7; }
@keyframes spin { to { transform: rotate(360deg); } }

.form-footer { margin-top: 1.5rem; text-align: center; font-size: 0.9rem; display: flex; flex-direction: column; gap: 0.5rem; }
.back-link { display: inline-flex; align-items: center; gap: 0.3rem; margin-top: 1rem; font-weight: 600; justify-content: center; }

.auth-form { display: none; animation: fade-in 0.4s ease; }
.auth-form.active { display: block; }

.theme-toggle { position: absolute; top: 1rem; left: 1rem; background: none; border: none; color: var(--text-color); font-size: 1.5rem; cursor: pointer; z-index: 10; opacity: 0.7; transition: opacity 0.3s; }
.theme-toggle:hover { opacity: 1; }

.toast { position: fixed; top: 20px; right: 20px; background: white; color: var(--text-color); padding: 1rem 1.5rem; border-radius: 10px; box-shadow: 0 4px 12px rgba(0,0,0,0.15); transform: translateX(120%); transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55); z-index: 1000; display: flex; align-items: center; gap: 0.8rem; border-right: 4px solid var(--primary-color); }
body.dark-mode .toast { background: var(--card-bg); }
.toast.show { transform: translateX(0); }
.toast.success { border-color: var(--success-color); }
.toast.error { border-color: var(--error-color); }

/* Modals */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); backdrop-filter: blur(5px); z-index: 100; display: none; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.3s; }
.modal-overlay.active { display: flex; opacity: 1; }
.modal-content { background: var(--card-bg); width: 90%; max-width: 400px; padding: 2rem; border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.2); transform: scale(0.9); transition: transform 0.3s; border: 1px solid rgba(255,255,255,0.1); }
.modal-overlay.active .modal-content { transform: scale(1); }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.close-modal { background: none; border: none; font-size: 1.5rem; color: var(--text-color); cursor: pointer; }

/* Responsive */
@media (max-width: 480px) {
  .login-container { padding: 1rem; }
  .glass-card { padding: 1.5rem 1rem; }
}

/* Manager Specific Override */
.manager-theme .glass-card { border: 1px solid rgba(212, 175, 55, 0.3); }
.manager-theme .bg-shapes { background: linear-gradient(135deg, #0f172a 0%, #3b0764 100%); }
.manager-theme .shape:nth-child(1) { background: linear-gradient(45deg, #d4af37, #854d0e); }
.manager-theme .shape:nth-child(2) { background: linear-gradient(45deg, #581c87, #d4af37); }
.manager-theme .btn-primary { background: linear-gradient(45deg, #581c87, #d4af37); color: white; }
.manager-theme .btn-primary:hover { box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4); }
.manager-theme .badge { background: rgba(212, 175, 55, 0.2); color: #d4af37; padding: 0.3rem 0.8rem; border-radius: 20px; font-size: 0.8rem; display: inline-block; margin-bottom: 1rem; border: 1px solid rgba(212, 175, 55, 0.5); font-weight: bold; }
.manager-theme h1 { color: #d4af37; }
.security-warning { background: rgba(229, 62, 62, 0.1); border: 1px solid rgba(229, 62, 62, 0.3); color: #fc8181; padding: 0.8rem; border-radius: 8px; font-size: 0.85rem; margin-bottom: 1.5rem; text-align: center; }