/* Login screen styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--dark-green) 0%, var(--navy) 100%);
    padding: 20px;
}

.login-box {
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    padding: 40px;
    width: 100%;
    max-width: 420px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.university-seal {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.seal-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--dark-green), var(--medium-green));
    border: 3px solid var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.seal-star {
    color: var(--gold);
    font-size: 40px;
}

.login-header h1 {
    color: var(--dark-green);
    font-size: 28px;
    margin-bottom: 5px;
}

.university-name {
    color: var(--navy);
    font-size: 14px;
    font-weight: 500;
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--dark-green), var(--medium-green));
    color: var(--white);
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(27, 67, 50, 0.4);
}

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

.error-message {
    color: var(--error);
    font-size: 14px;
    margin-top: 10px;
    text-align: center;
}

.login-info {
    margin-top: 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.login-info small {
    color: var(--dark-gray);
    font-size: 12px;
}

/* Institutional refinements */
.system-subtitle {
    margin-top: 8px;
    color: var(--dark-gray);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.login-box {
    border-top: 5px solid var(--gold);
}

.seal-star {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.04em;
}