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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.login-wrapper {
    width: 100%;
    max-width: 420px;
}

.login-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem 2.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.school-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #4361ee, #3f37c9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: 0 10px 30px rgba(67, 97, 238, 0.3);
}

.school-logo i {
    font-size: 2rem;
    color: white;
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: #6b7280;
    font-size: 1rem;
    font-weight: 500;
}

.alert {
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.alert-error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #9ca3af;
    z-index: 1;
}

.input-group input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    background: #f9fafb;
    transition: all 0.3s ease;
    outline: none;
}

.input-group input:focus {
    border-color: #4361ee;
    background: white;
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.input-group input:focus + .input-icon,
.input-group input:not(:placeholder-shown) + .input-icon {
    color: #4361ee;
}

.login-btn {
    background: linear-gradient(135deg, #4361ee, #3f37c9);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    box-shadow: 0 4px 15px rgba(67, 97, 238, 0.3);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(67, 97, 238, 0.4);
}

.login-btn:active {
    transform: translateY(0);
}

.back-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: #6b7280;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid #e5e7eb;
    margin-top: 0.5rem;
}

.back-btn:hover {
    background: #f3f4f6;
    color: #374151;
    border-color: #d1d5db;
}

@media (max-width: 480px) {
    .login-container {
        padding: 2rem 1.5rem;
        margin: 1rem;
    }
    
    .login-header h1 {
        font-size: 1.5rem;
    }
    
    .school-logo {
        width: 60px;
        height: 60px;
    }
    
    .school-logo i {
        font-size: 1.5rem;
    }
}