/* Auth Section - Landscape Layout */
.auth-section {
    min-height: 100vh;
    background: var(--dark);
    display: flex;
    align-items: center;
    padding: 80px 0 0;
}

.auth-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
    min-height: calc(100vh - 80px);
    max-width: 1600px;
    margin: 0 auto;
}

/* Left Side - Branding */
.auth-branding {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    position: relative;
    overflow: hidden;
}

.auth-branding::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    top: -200px;
    right: -200px;
}

.auth-branding::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 50%;
    bottom: -100px;
    left: -100px;
}

.branding-content {
    position: relative;
    z-index: 1;
    max-width: 500px;
}

.branding-logo {
    width: 80px;
    height: auto;
    margin-bottom: 2rem;
    filter: brightness(0) invert(1);
}

.branding-content h1 {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 1rem;
    font-weight: 800;
    line-height: 1.2;
}

.branding-content > p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    line-height: 1.6;
}

.branding-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: flex-start;
}

.branding-feature {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    text-align: left;
}

.branding-feature .feature-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    backdrop-filter: blur(10px);
}

.branding-feature .feature-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--white);
}

.branding-feature h4 {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.branding-feature p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Right Side - Auth Forms */
.auth-forms {
    background: var(--dark);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    overflow-y: auto;
}

.auth-container {
    width: 100%;
    max-width: 480px;
}

.auth-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    border-bottom: 2px solid var(--gray-dark);
}

.auth-tab {
    flex: 1;
    padding: 1rem;
    background: none;
    border: none;
    color: var(--gray-light);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    position: relative;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}

.auth-tab:hover {
    color: var(--white);
}

.auth-tab.active {
    color: var(--white);
    border-bottom-color: var(--primary-light);
}

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

.auth-form-container.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.auth-form-container h2 {
    font-size: 2rem;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: var(--gray-light);
    margin-bottom: 2rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: var(--white);
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input {
    padding: 0.875rem 1rem;
    background: var(--dark-secondary);
    border: 2px solid var(--gray-dark);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-size: 1rem;
    transition: var(--transition-base);
    font-family: var(--font-primary);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group input::placeholder {
    color: var(--gray-medium);
}

.form-group small {
    color: var(--gray-medium);
    font-size: 0.85rem;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: -0.5rem;
    flex-wrap: wrap;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-light);
    font-size: 0.9rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-light);
}

.checkbox-label a {
    color: var(--primary-light);
    text-decoration: none;
}

.checkbox-label a:hover {
    text-decoration: underline;
}

.forgot-link {
    color: var(--primary-light);
    text-decoration: none;
    font-size: 0.9rem;
    white-space: nowrap;
}

.forgot-link:hover {
    text-decoration: underline;
}

.form-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.5rem 0;
}

.form-divider::before,
.form-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-dark);
}

.form-divider span {
    color: var(--gray-medium);
    font-size: 0.9rem;
}

.btn-social {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--dark-secondary);
    border: 2px solid var(--gray-dark);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-family: var(--font-primary);
}

.btn-social:hover {
    background: var(--dark);
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.auth-error {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-sm);
    color: #ef4444;
    font-size: 0.9rem;
    display: none;
}

.auth-error.show {
    display: block;
    animation: shake 0.3s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.auth-success {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: var(--radius-sm);
    color: #22c55e;
    font-size: 0.9rem;
    display: none;
}

.auth-success.show {
    display: block;
}

/* Loading State */
.btn-primary.loading,
.btn-social.loading {
    position: relative;
    pointer-events: none;
    color: transparent;
}

.btn-primary.loading::after,
.btn-social.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid var(--white);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spinner 0.6s linear infinite;
}

@keyframes spinner {
    to { transform: rotate(360deg); }
}

/* Responsive - Tablet */
@media (max-width: 1024px) {
    .auth-wrapper {
        grid-template-columns: 1fr;
    }

    .auth-branding {
        display: none;
    }

    .auth-forms {
        min-height: calc(100vh - 80px);
    }
}

/* Responsive - Mobile */
@media (max-width: 768px) {
    .auth-section {
        padding: 70px 0 0;
    }

    .auth-forms {
        padding: 2rem 1.5rem;
        min-height: calc(100vh - 70px);
    }

    .auth-container {
        max-width: 100%;
    }

    .auth-form-container h2 {
        font-size: 1.75rem;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .forgot-link {
        margin-left: auto;
    }

    .auth-form {
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .auth-tabs {
        gap: 0.5rem;
    }

    .auth-tab {
        font-size: 1rem;
        padding: 0.875rem 0.5rem;
    }
}

/* Custom Modal Dialog */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.modal-overlay.show {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-dialog {
    background: var(--dark-secondary);
    border: 2px solid var(--gray-dark);
    border-radius: var(--radius-lg);
    padding: 2rem;
    max-width: 450px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.3s ease;
}

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

.modal-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background: rgba(239, 68, 68, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-icon svg {
    width: 30px;
    height: 30px;
    stroke: #ef4444;
}

.modal-title {
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
}

.modal-message {
    color: var(--gray-light);
    font-size: 1rem;
    text-align: center;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.modal-button {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--primary-light);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    font-family: var(--font-primary);
}

.modal-button:hover {
    background: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
}