/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #0a0a0a;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%2322c55e" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    z-index: -1;
}

/* Header */
.header {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(34, 197, 94, 0.2);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(34, 197, 94, 0.1);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s ease;
}

.brand-link:hover {
    opacity: 0.8;
}

.logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #22c55e 0%, #10b981 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

/* Auth Container */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 20px 20px;
}

.auth-card {
    background: #1a1a1a;
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(34, 197, 94, 0.2);
    width: 100%;
    max-width: 450px;
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #22c55e 0%, #3b82f6 100%);
}

/* Auth Tabs */
.auth-tabs {
    display: flex;
    margin-bottom: 2.5rem;
    background: rgba(34, 197, 94, 0.1);
    border-radius: 12px;
    padding: 0.25rem;
    gap: 0.25rem;
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    border: none;
    background: transparent;
    color: #a1a1aa;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.tab-btn:hover {
    color: #ffffff;
    background: rgba(34, 197, 94, 0.1);
}

.tab-btn.active {
    background: linear-gradient(135deg, #22c55e 0%, #3b82f6 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
}

.tab-btn i {
    font-size: 1.1rem;
}

/* Auth Forms */
.auth-form {
    display: none;
    animation: fadeIn 0.3s ease;
}

.auth-form.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: #ffffff;
    font-size: 0.95rem;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper i {
    position: absolute;
    left: 1rem;
    color: #a1a1aa;
    font-size: 1rem;
    z-index: 1;
    pointer-events: none;
}

.input-wrapper input {
    width: 100%;
    padding: 1rem 1rem 1rem 2.5rem;
    border: 2px solid rgba(34, 197, 94, 0.2);
    border-radius: 12px;
    background: rgba(34, 197, 94, 0.05);
    color: #ffffff;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
}

.input-wrapper input:focus {
    outline: none;
    border-color: #22c55e;
    background: rgba(34, 197, 94, 0.1);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.input-wrapper input::placeholder {
    color: #a1a1aa;
    opacity: 0.7;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #a1a1aa;
    cursor: pointer;
    font-size: 1rem;
    transition: color 0.3s ease;
    padding: 0.25rem;
    border-radius: 4px;
    z-index: 2;
}

.toggle-password:hover {
    color: #22c55e;
    background: rgba(34, 197, 94, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: #a1a1aa;
    line-height: 1.4;
}

/* Checkbox */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: #a1a1aa;
    margin-top: 0.5rem;
}

.checkbox-wrapper input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(34, 197, 94, 0.3);
    border-radius: 4px;
    background: rgba(34, 197, 94, 0.05);
    position: relative;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkmark {
    background: #22c55e;
    border-color: #22c55e;
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.8rem;
    font-weight: bold;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #22c55e 0%, #10b981 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(34, 197, 94, 0.4);
}

.btn-full {
    width: 100%;
    padding: 1.25rem;
    font-size: 1rem;
    font-weight: 600;
    margin-top: 1rem;
}

/* Notifications */
.notification-container {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 400px;
}

.notification {
    background: #1a1a1a;
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(34, 197, 94, 0.2);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    animation: slideIn 0.3s ease;
    position: relative;
    overflow: hidden;
}

.notification::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(135deg, #22c55e 0%, #3b82f6 100%);
}

.notification.error::before {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.notification.success::before {
    background: linear-gradient(135deg, #22c55e 0%, #10b981 100%);
}

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

.notification-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
}

.notification-content i {
    font-size: 1.2rem;
}

.notification.error .notification-content i {
    color: #ef4444;
}

.notification.success .notification-content i {
    color: #22c55e;
}

.notification-content span {
    color: #ffffff;
    font-size: 0.9rem;
    line-height: 1.4;
}

.notification-close {
    background: none;
    border: none;
    color: #a1a1aa;
    cursor: pointer;
    font-size: 1rem;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.notification-close:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

/* Responsive Design */
@media (max-width: 480px) {
    .auth-container {
        padding: 80px 15px 20px;
    }
    
    .auth-card {
        padding: 2rem;
        border-radius: 16px;
    }
    
    .auth-tabs {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .tab-btn {
        padding: 0.5rem;
        font-size: 0.8rem;
    }
    
    .notification-container {
        right: 15px;
        left: 15px;
        max-width: none;
    }
    
    .nav {
        padding-left: 15px;
        padding-right: 15px;
    }
}