/* Login Page Styles */

.login-container {
    min-height: 100vh;
    background: var(--bg-color);
    /* Subtle grid pattern for academic/tech feel */
    background-image: 
        linear-gradient(rgba(100, 255, 218, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(100, 255, 218, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

.login-card {
    background: var(--card-bg);
    border: 1px solid rgba(100, 255, 218, 0.1);
    border-radius: 10px;
    width: 100%;
    max-width: 450px;
    box-shadow: 0 10px 30px -10px rgba(2, 12, 27, 0.7);
}

.logo-img {
    width: 80px;
    height: auto;
    filter: drop-shadow(0 0 10px rgba(100, 255, 218, 0.3));
}

.login-tabs {
    background: var(--bg-color);
    border-radius: 30px;
    padding: 5px;
    display: inline-flex;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-color);
    padding: 8px 25px;
    border-radius: 25px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    font-weight: 500;
}

.tab-btn.active {
    background: var(--card-bg);
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    box-shadow: 0 0 15px rgba(100, 255, 218, 0.1);
}

.form-control {
    background: var(--bg-color);
    border: 1px solid rgba(136, 146, 176, 0.2);
    color: var(--heading-color);
    border-radius: 5px;
    padding: 12px;
    transition: all 0.3s ease;
}

.form-control:focus {
    background: var(--bg-color);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 1px var(--accent-color);
    color: var(--heading-color);
}

.form-control::placeholder {
    color: rgba(136, 146, 176, 0.5);
}

.btn-gradient {
    background: transparent;
    border: 1px solid var(--secondary-accent);
    color: var(--secondary-accent);
    font-weight: 600;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-gradient:hover {
    background: rgba(255, 215, 0, 0.1);
    color: var(--secondary-accent);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
    transform: translateY(-2px);
}

.animate-shake {
    animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
    10%, 90% { transform: translate3d(-1px, 0, 0); }
    20%, 80% { transform: translate3d(2px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
    40%, 60% { transform: translate3d(4px, 0, 0); }
}