/* css/login.css */
:root {
    --gold: #d4af37;
    --gold-light: #ffd966;
    --gold-dark: #b8860b;
    --dark: #0a0a0a;
    --dark-card: #111111;
    --dark-light: #1a1a1a;
    --text: #e0e0e0;
    --text-muted: #888888;
    --danger: #dc3545;
    --success: #28a745;
    --google: #DB4437;
    --google-hover: #C53829;
}

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

body {
    background: linear-gradient(135deg, var(--dark) 0%, #000 100%);
    color: var(--text);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
}

.login-card {
    background: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 30px;
    padding: 40px 30px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.8), 0 0 0 1px rgba(212,175,55,0.2);
    animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.logo-area {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    max-width: 200px;
    height: auto;
    filter: drop-shadow(0 0 20px rgba(212,175,55,0.3));
    animation: glow 3s infinite alternate;
}

@keyframes glow {
    from { filter: drop-shadow(0 0 15px var(--gold)); }
    to { filter: drop-shadow(0 0 30px var(--gold-light)); }
}

.login-title {
    color: var(--gold);
    font-size: 2rem;
    margin-bottom: 10px;
    text-align: center;
    position: relative;
}

.login-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--gold);
    margin: 10px auto 0;
}

.login-tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(212,175,55,0.2);
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 15px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.tab-btn.active {
    color: var(--gold);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gold);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-content.active {
    display: block;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    color: var(--gold);
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 15px;
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(212,175,55,0.3);
    border-radius: 12px;
    color: #fff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 20px rgba(212,175,55,0.2);
}

.form-control::placeholder {
    color: rgba(255,255,255,0.3);
}

.btn-google {
    width: 100%;
    background: var(--google);
    color: #fff;
    border: none;
    padding: 15px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 20px 0;
    text-decoration: none;
}

.btn-google:hover {
    background: var(--google-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(219, 68, 55, 0.4);
}

.btn-google i {
    font-size: 1.3rem;
}

.btn-submit {
    width: 100%;
    background: linear-gradient(45deg, var(--gold-dark), var(--gold));
    color: #000;
    border: none;
    padding: 15px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: 20px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(212,175,55,0.4);
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--text-muted);
    margin: 20px 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid rgba(212,175,55,0.2);
}

.divider span {
    padding: 0 15px;
    font-size: 0.9rem;
}

.alert {
    padding: 15px;
    border-radius: 10px;
    margin: 20px 0;
    text-align: center;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.alert-error {
    background: rgba(220, 53, 69, 0.2);
    border: 1px solid var(--danger);
    color: #ff8f8f;
}

.alert-success {
    background: rgba(40, 167, 69, 0.2);
    border: 1px solid var(--success);
    color: #8fff8f;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 5px solid rgba(212,175,55,0.3);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 480px) {
    .login-card {
        padding: 25px 20px;
    }
    
    .login-title {
        font-size: 1.8rem;
    }
    
    .tab-btn {
        padding: 12px;
        font-size: 1rem;
    }
}