.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 120px);
    padding: clamp(20px, 4vw, 40px);
}

.auth-box {
    width: 100%;
    max-width: 460px;
    border-radius: 24px;
    padding: clamp(32px, 5vw, 48px);
    backdrop-filter: blur(24px);
    border: 1px solid var(--white-15);
    animation: authSlideIn 0.5s ease;
}

.dark-theme .auth-box {
    background: var(--sidebar-dark-bg);
    border-color: var(--dark-primary-25);
    box-shadow: 0 20px 64px var(--dark-primary-20);
}

.light-theme .auth-box {
    background: var(--sidebar-light-bg);
    border-color: var(--light-primary-25);
    box-shadow: 0 20px 64px var(--light-primary-20);
}

@keyframes authSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-header {
    text-align: center;
    margin-bottom: clamp(24px, 4vw, 32px);
}

.auth-header h2 {
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    font-weight: 900;
}

.auth-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: clamp(24px, 4vw, 32px);
    padding: 6px;
    border-radius: 16px;
    backdrop-filter: blur(12px);
}

.dark-theme .auth-tabs {
    background: var(--dark-primary-08);
}

.light-theme .auth-tabs {
    background: var(--light-primary-08);
}

.auth-tab {
    flex: 1;
    padding: clamp(10px, 1.5vw, 12px);
    border-radius: 12px;
    border: none;
    font-weight: 800;
    font-size: clamp(0.8rem, 1.3vw, 0.9rem);
    cursor: pointer;
    transition: all 0.3s ease;
    background: transparent;
}

.dark-theme .auth-tab {
    color: var(--dark-text);
}

.light-theme .auth-tab {
    color: var(--light-text);
}

.dark-theme .auth-tab.active {
    background: linear-gradient(135deg, var(--dark-primary), var(--dark-secondary));
    color: var(--white);
    box-shadow: 0 4px 16px var(--dark-primary-30);
}

.light-theme .auth-tab.active {
    background: linear-gradient(135deg, var(--light-primary), var(--light-secondary));
    color: var(--white);
    box-shadow: 0 4px 16px var(--light-primary-30);
}

.auth-tab:hover:not(.active) {
    transform: translateY(-2px);
}

.dark-theme .auth-tab:hover:not(.active) {
    background: var(--dark-primary-12);
}

.light-theme .auth-tab:hover:not(.active) {
    background: var(--light-primary-12);
}

.auth-form-container {
    animation: formFadeIn 0.3s ease;
}

.auth-form-container.hidden {
    display: none;
}

@keyframes formFadeIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: clamp(16px, 2.5vw, 20px);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 700;
    font-size: clamp(0.75rem, 1.2vw, 0.85rem);
    opacity: 0.9;
}

.form-group input {
    padding: clamp(12px, 2vw, 14px) clamp(16px, 2.5vw, 18px);
    border-radius: 14px;
    border: 1px solid var(--white-15);
    font-size: clamp(0.8rem, 1.3vw, 0.9rem);
    font-weight: 600;
    transition: all 0.3s ease;
}

.dark-theme .form-group input {
    background: var(--dark-primary-08);
    color: var(--dark-text);
    border-color: var(--dark-primary-20);
}

.light-theme .form-group input {
    background: var(--light-primary-08);
    color: var(--light-text);
    border-color: var(--light-primary-20);
}

.form-group input:focus {
    outline: none;
}

.dark-theme .form-group input:focus {
    border-color: var(--dark-primary-40);
    box-shadow: 0 0 24px var(--dark-primary-20);
}

.light-theme .form-group input:focus {
    border-color: var(--light-primary-40);
    box-shadow: 0 0 24px var(--light-primary-20);
}

.form-group input::placeholder {
    opacity: 0.5;
}

.auth-button {
    padding: clamp(12px, 2vw, 14px);
    border-radius: 14px;
    border: none;
    font-weight: 800;
    font-size: clamp(0.85rem, 1.3vw, 0.95rem);
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: clamp(8px, 1.5vw, 12px);
}

.dark-theme .auth-button {
    background: linear-gradient(135deg, var(--dark-primary), var(--dark-secondary));
    color: var(--white);
    box-shadow: 0 6px 20px var(--dark-primary-30);
}

.light-theme .auth-button {
    background: linear-gradient(135deg, var(--light-primary), var(--light-secondary));
    color: var(--white);
    box-shadow: 0 6px 20px var(--light-primary-30);
}

.auth-button:hover {
    transform: translateY(-2px);
}

.dark-theme .auth-button:hover {
    box-shadow: 0 8px 28px var(--dark-primary-40);
}

.light-theme .auth-button:hover {
    box-shadow: 0 8px 28px var(--light-primary-40);
}

.forgot-link {
    text-align: center;
    font-size: clamp(0.75rem, 1.2vw, 0.85rem);
    font-weight: 600;
    text-decoration: none;
    opacity: 0.7;
    transition: opacity 0.3s ease;
    margin-top: clamp(8px, 1.5vw, 12px);
}

.dark-theme .forgot-link {
    color: var(--dark-secondary);
}

.light-theme .forgot-link {
    color: var(--light-primary);
}

.forgot-link:hover {
    opacity: 1;
}

@media (max-width: 640px) {
    .auth-container {
        padding: clamp(16px, 3vw, 24px);
    }
    
    .auth-box {
        padding: clamp(24px, 4vw, 32px);
    }
}