* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

.login-container {
    height: 100vh;
    height: 100dvh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
}

.login-brand {
    background: var(--color-bg-elevated);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    height: 100%;
}

.login-brand::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 200%;
    background: var(--color-accent);
    opacity: 0.03;
    transform: rotate(-15deg);
}

.brand-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 0.05em;
    color: var(--color-text);
    position: relative;
    z-index: 1;
}

.brand-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.brand-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.5rem);
    line-height: 0.9;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.brand-title-accent {
    color: var(--color-accent);
}

.brand-description {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--color-text-muted);
    max-width: 400px;
}

.brand-features {
    margin-top: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.brand-feature {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.brand-feature-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 92, 0, 0.1);
    color: var(--color-accent);
}

.brand-footer {
    position: relative;
    z-index: 1;
    font-size: 0.75rem;
    color: var(--color-text-subtle);
    margin-top: auto;
}

.login-form-panel {
    background: var(--color-bg);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    overflow: hidden;
}

.login-container::-webkit-scrollbar {
    width: 6px;
}

.login-container::-webkit-scrollbar-track {
    background: var(--color-bg);
    border-radius: 3px;
}

.login-container::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
    transition: background var(--duration-normal) var(--ease-out);
}

.login-container::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

.login-container {
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) var(--color-bg);
}

.login-form-wrapper {
    width: 100%;
    max-width: 360px;
}

.login-header {
    margin-bottom: var(--space-xs);
}

.login-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: 4px;
}

.login-label-line {
    width: 24px;
    height: 2px;
    background: var(--color-accent);
}

.login-label-text {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.login-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    letter-spacing: 0.02em;
    margin-bottom: 2px;
}

.login-subtitle {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.oauth-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.btn-oauth {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid var(--color-border);
    background: var(--color-bg-elevated);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
}

.btn-oauth:hover {
    border-color: var(--color-accent);
    background: rgba(255, 92, 0, 0.05);
}

.btn-oauth svg {
    width: 18px;
    height: 18px;
}

.btn-oauth-google:hover {
    border-color: #4285f4;
    background: rgba(66, 133, 244, 0.05);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
}

.login-form .form-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.login-form .form-group label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text);
}

.login-form .form-group input {
    padding: var(--space-sm);
    font-family: var(--font-body);
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg-elevated);
    color: var(--color-text);
    transition: border-color var(--duration-fast);
}

.login-form .form-group input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.login-form .form-group input::placeholder {
    color: var(--color-text-subtle);
}

@media (max-width: 768px) {
    .login-form .form-group input {
        font-size: 16px !important;
    }
}

.login-form .form-group .input-hint {
    font-size: 0.6875rem;
    color: var(--color-text-subtle);
}

.login-form .form-group.error input {
    border-color: #ef4444;
}

.login-form .form-group .error-message {
    font-size: 0.6875rem;
    color: #ef4444;
}

.btn-submit {
    padding: 12px var(--space-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    background: var(--color-accent);
    color: white;
    border: 2px solid var(--color-accent);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: var(--space-xs);
    box-shadow: 0 2px 4px rgba(255, 92, 0, 0.2);
}

.btn-submit:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(255, 92, 0, 0.3);
}

.btn-submit:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(255, 92, 0, 0.2);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.login-divider {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin: 6px 0;
    color: var(--color-text-secondary);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.btn-google {
    width: 100%;
    padding: 8px var(--space-sm);
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    background: white;
    color: #1f2937;
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--duration-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    position: relative;
    z-index: 10;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
}

.btn-google:hover {
    background: #f9fafb;
    border-color: #d1d5db;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.btn-google:active {
    transform: scale(0.98);
    background: #f3f4f6;
}

.btn-google:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-google svg {
    flex-shrink: 0;
}

.form-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    margin-top: var(--space-xs);
}

.form-footer a {
    color: var(--color-accent);
    text-decoration: none;
    cursor: pointer;
    transition: color var(--duration-fast);
}

.form-footer a:hover {
    text-decoration: underline;
    color: var(--color-accent-hover);
}

.form-tabs {
    display: flex;
    gap: 0;
    margin-bottom: var(--space-xs);
    border-bottom: 1px solid var(--color-border);
}

.form-tab {
    padding: 10px 20px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-muted);
    background: transparent;
    border: 1px solid var(--color-border);
    border-bottom: none;
    border-radius: 4px 4px 0 0;
    cursor: pointer;
    position: relative;
    transition: all 0.2s ease;
    margin-right: -1px;
}

.form-tab:last-child {
    margin-right: 0;
}

.form-tab:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: rgba(255, 92, 0, 0.05);
}

.form-tab.active {
    color: var(--color-accent);
    background: transparent;
    border-color: var(--color-accent);
    border-bottom-color: transparent;
    margin-bottom: -1px;
}

.login-page .alert {
    padding: 6px;
    font-size: 0.75rem;
    margin-bottom: 4px;
    display: none;
}

.login-page .alert.success {
    background: rgba(34, 197, 94, 0.1);
    border-left: 3px solid #22c55e;
    color: #22c55e;
}

.login-page .alert.error {
    background: rgba(239, 68, 68, 0.1);
    border-left: 3px solid #ef4444;
    color: #ef4444;
}

.login-divider {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    color: var(--color-text-subtle);
    font-size: 0.75rem;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.login-info {
    padding: 6px;
    background: rgba(255, 92, 0, 0.05);
    border-left: 3px solid var(--color-accent);
    margin-bottom: var(--space-xs);
}

.login-info-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 2px;
}

.login-info-text {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    line-height: 1.3;
}

.login-visual {
    position: absolute;
    bottom: var(--space-xl);
    right: var(--space-xl);
    opacity: 0.5;
}

.visual-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.visual-cell {
    width: 10px;
    height: 10px;
    background: var(--color-border);
}

.visual-cell.accent {
    background: var(--color-accent);
}

@media (max-width: 1024px) {
    .login-container {
        grid-template-columns: 1fr;
        height: 100vh;
        height: 100dvh;
    }
    
    .login-brand {
        display: none;
    }
    
    .login-form-panel {
        padding: var(--space-md) var(--space-lg);
        height: 100%;
    }
    
    .login-form-wrapper {
        max-width: 400px;
    }
    
    .login-header {
        margin-bottom: var(--space-xs);
    }
    
    .login-title {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    html, body {
        height: 100%;
        overflow: hidden;
    }
    
    .login-container {
        height: 100vh;
        height: 100dvh;
    }
    
    .login-form-panel {
        padding: var(--space-sm) var(--space-md);
        height: 100%;
        overflow: hidden;
        align-items: center;
    }
    
    .login-form-wrapper {
        max-width: 100%;
    }
    
    .login-header {
        margin-bottom: 4px;
    }
    
    .login-label {
        margin-bottom: 2px;
    }
    
    .login-label-line {
        width: 18px;
    }
    
    .login-label-text {
        font-size: 0.625rem;
    }
    
    .login-title {
        font-size: 1.5rem;
        margin-bottom: 2px;
    }
    
    .login-subtitle {
        font-size: 0.75rem;
        line-height: 1.3;
    }
    
    .form-tabs {
        margin-bottom: 4px;
        gap: var(--space-xs);
    }
    
    .form-tab {
        font-size: 0.75rem;
        padding-bottom: 4px;
    }
    
    .login-form {
        gap: 4px;
        margin-bottom: 4px;
    }
    
    .login-form .form-group {
        gap: 1px;
    }
    
    .login-form .form-group label {
        font-size: 0.6875rem;
    }
    
    .login-form .form-group input {
        padding: 6px 8px;
        font-size: 0.75rem;
    }
    
    .login-form .form-group .input-hint {
        font-size: 0.625rem;
    }
    
    .btn-submit {
        padding: 8px var(--space-sm);
        font-size: 0.75rem;
        margin-top: 4px;
    }
    
    .form-footer {
        font-size: 0.625rem;
    }
    
    .login-page .alert {
        padding: 4px;
        font-size: 0.6875rem;
        margin-bottom: 4px;
    }
    
    .login-info {
        padding: 4px;
    }
    
    .login-info-title {
        font-size: 0.6875rem;
    }
    
    .login-info-text {
        font-size: 0.625rem;
        line-height: 1.2;
    }
}

@media (max-width: 360px) {
    .login-form-panel {
        padding: 4px var(--space-xs);
    }
    
    .login-title {
        font-size: 1.25rem;
    }
    
    .login-subtitle {
        font-size: 0.6875rem;
    }
    
    .login-form .form-group input {
        padding: 5px 6px;
        font-size: 0.6875rem;
    }
    
    .btn-submit {
        padding: 6px var(--space-xs);
    }
}

@media (max-height: 500px) and (orientation: landscape) {
    .login-form-panel {
        overflow: hidden;
        align-items: center;
        padding: 4px var(--space-xs);
    }
    
    .login-form-panel::-webkit-scrollbar {
        width: 6px;
    }
    
    .login-form-panel::-webkit-scrollbar-track {
        background: var(--color-bg);
        border-radius: 3px;
    }
    
    .login-form-panel::-webkit-scrollbar-thumb {
        background: var(--color-border);
        border-radius: 3px;
        transition: background var(--duration-normal) var(--ease-out);
    }
    
    .login-form-panel::-webkit-scrollbar-thumb:hover {
        background: var(--color-accent);
    }
    
    .login-form-panel {
        scrollbar-width: thin;
        scrollbar-color: var(--color-border) var(--color-bg);
    }
    
    .login-header {
        margin-bottom: var(--space-xs);
    }
    
    .login-title {
        font-size: 1.5rem;
    }
    
    .login-subtitle {
        display: none;
    }
    
    .form-tabs {
        margin-bottom: var(--space-xs);
    }
    
    .login-form {
        gap: var(--space-xs);
        margin-bottom: var(--space-xs);
    }
    
    .login-info {
        display: none;
    }
}

.input-wrapper {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
}

.input-wrapper input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg-elevated);
    color: var(--color-text);
    transition: border-color var(--duration-fast);
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.password-wrapper input {
    padding-right: 48px;
}

.email-wrapper {
    position: relative;
    display: block;
}

.email-wrapper input {
    width: 100%;
    padding-right: 185px !important;
}

.email-suffix {
    position: absolute;
    right: 1px;
    top: 1px;
    bottom: 1px;
    display: flex;
    align-items: center;
    padding: 0 var(--space-sm);
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    background: var(--color-bg-elevated);
    user-select: none;
    pointer-events: none;
    white-space: nowrap;
    border-left: 1px solid var(--color-border);
}

.password-wrapper input {
    padding-right: 48px;
}

.password-toggle {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    width: 48px;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--duration-normal) var(--ease-out);
}

.password-toggle:hover {
    color: var(--color-accent);
}

.password-toggle .icon {
    width: 18px;
    height: 18px;
}

.forgot-password-link {
    display: inline-block;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-primary, #ff5c00);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.forgot-password-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.password-strength {
    margin-top: var(--space-xs);
    display: none;
}

.password-strength.visible {
    display: block;
    animation: fadeInUp 0.3s var(--ease-out);
}

.password-strength-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
    margin-bottom: var(--space-2xs);
}

.password-strength-fill {
    height: 100%;
    width: 0%;
    transition: all var(--duration-slow) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.password-strength-fill::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.2) 50%,
        transparent 100%
    );
    animation: skeletonShimmer 1.5s infinite;
}

@keyframes skeletonShimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.password-strength-fill.weak {
    width: 33%;
    background: #ef4444;
}

.password-strength-fill.medium {
    width: 66%;
    background: #f59e0b;
}

.password-strength-fill.strong {
    width: 100%;
    background: #10b981;
}

.password-strength-text {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    display: block;
}

.password-strength-text.weak {
    color: #ef4444;
}

.password-strength-text.medium {
    color: #f59e0b;
}

.password-strength-text.strong {
    color: #10b981;
}

.password-feedback {
    display: none;
    margin-top: 0.5rem;
    padding: 0.5rem;
    font-size: 0.813rem;
    border-left: 3px solid;
    border-radius: 4px;
    animation: fadeIn 0.3s ease;
}

.password-feedback.warning {
    color: #fbbf24;
    background: rgba(251, 191, 36, 0.1);
    border-color: #fbbf24;
}

.password-feedback.error {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
}

.password-feedback.success {
    color: #10b981;
    background: rgba(16, 185, 129, 0.1);
    border-color: #10b981;
}

.password-feedback.info {
    color: #60a5fa;
    background: rgba(96, 165, 250, 0.1);
    border-color: #60a5fa;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hibp-checking {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.75rem;
    font-size: 0.875rem;
    color: #60a5fa;
    background: rgba(96, 165, 250, 0.1);
    border-radius: 4px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.alert {
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    border-left: 4px solid;
    display: none;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    animation: slideInDown 0.3s var(--ease-out);
    font-size: 0.875rem;
    line-height: 1.5;
}

.alert .icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.alert.success {
    background: rgba(16, 185, 129, 0.15);
    border-color: #10b981;
    color: #10b981;
}

.alert.error {
    background: rgba(239, 68, 68, 0.15);
    border-color: #ef4444;
    color: #ef4444;
}

.alert.visible {
    display: flex;
}

.alert span {
    flex: 1;
    font-weight: 500;
}

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

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

.login-skeleton {
    display: none;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
}

.login-skeleton.visible {
    display: flex;
    animation: fadeInUp 0.3s var(--ease-out);
}

.skeleton-line {
    height: 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.skeleton-line-lg {
    height: 24px;
    width: 60%;
}

.skeleton-line-sm {
    width: 40%;
}

.skeleton-line::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.1) 50%,
        transparent 100%
    );
    animation: skeletonShimmer 1.5s infinite;
}

.btn-submit.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn-submit.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-bg);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.form-group.error input {
    border-color: #ef4444;
    animation: shake 0.3s;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

input.match {
    border-color: #10b981 !important;
    background: rgba(16, 185, 129, 0.05);
}

input.no-match {
    border-color: #ef4444 !important;
    background: rgba(239, 68, 68, 0.05);
}

.input-wrapper input.match {
    border-color: #10b981 !important;
}

.input-wrapper input.no-match {
    border-color: #ef4444 !important;
}

@media (max-width: 768px) {
    .password-toggle {
        width: 40px;
    }
    
    .password-wrapper input {
        padding-right: 40px;
    }
}