/**
 * Modern Authentication Pages Styles
 * Inspired by Telegram Web and WhatsApp Web
 */

:root[data-theme="light"] {
    --auth-bg-primary: #ffffff;
    --auth-bg-secondary: #f0f2f5;
    --auth-text-primary: #111b21;
    --auth-text-secondary: #667781;
    --auth-border-color: #e9edef;
    --auth-accent-color: #008069;
    --auth-accent-hover: #017561;
    --auth-input-bg: #ffffff;
    --auth-shadow: rgba(0, 0, 0, 0.1);
}

:root[data-theme="dark"] {
    --auth-bg-primary: #111b21;
    --auth-bg-secondary: #202c33;
    --auth-text-primary: #e9edef;
    --auth-text-secondary: #8696a0;
    --auth-border-color: #313d45;
    --auth-accent-color: #00a884;
    --auth-accent-hover: #008069;
    --auth-input-bg: #2a3942;
    --auth-shadow: rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--auth-bg-secondary);
    color: var(--auth-text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative;
    overflow-x: hidden;
}

/* Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(0, 128, 105, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 168, 132, 0.05) 0%, transparent 50%);
    z-index: 0;
    pointer-events: none;
}

.auth-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    background-color: var(--auth-bg-primary);
    border-radius: 16px;
    box-shadow: 0 8px 32px var(--auth-shadow);
    padding: 48px 40px;
    animation: fadeInUp 0.5s ease;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

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

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--auth-accent-color), var(--auth-accent-hover));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 128, 105, 0.2);
}

.auth-logo i {
    font-size: 32px;
    color: white;
}

.auth-title {
    font-size: 28px;
    font-weight: 600;
    color: var(--auth-text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.auth-subtitle {
    font-size: 14px;
    color: var(--auth-text-secondary);
    margin-bottom: 0;
}

.auth-form {
    margin-top: 32px;
}

.form-group {
    margin-bottom: 20px;
    position: relative;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--auth-text-primary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--auth-border-color);
    border-radius: 8px;
    background-color: var(--auth-input-bg);
    color: var(--auth-text-primary);
    font-size: 15px;
    transition: all 0.2s ease;
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--auth-accent-color);
    box-shadow: 0 0 0 3px rgba(0, 128, 105, 0.1);
}

.form-input::placeholder {
    color: var(--auth-text-secondary);
}

.password-container {
    position: relative;
}

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

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--auth-text-secondary);
    font-size: 18px;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: color 0.2s ease, background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

.password-toggle:hover {
    color: var(--auth-accent-color);
    background-color: var(--auth-bg-secondary);
}

.form-error {
    color: #e53e3e;
    font-size: 13px;
    margin-top: 6px;
    display: block;
    min-height: 20px;
    font-weight: 500;
}

.form-message {
    font-size: 13px;
    margin-top: 6px;
    display: block;
    min-height: 20px;
    font-weight: 500;
}

.form-message.success {
    color: var(--auth-accent-color);
}

.form-message.error {
    color: #e53e3e;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background-color: var(--auth-accent-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 8px;
    font-family: inherit;
    letter-spacing: 0.3px;
}

.submit-btn:hover:not(:disabled) {
    background-color: var(--auth-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 128, 105, 0.3);
}

.submit-btn:active:not(:disabled) {
    transform: translateY(0);
}

.submit-btn:disabled {
    background-color: var(--auth-border-color);
    color: var(--auth-text-secondary);
    cursor: not-allowed;
    opacity: 0.6;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--auth-border-color);
}

.auth-footer p {
    font-size: 14px;
    color: var(--auth-text-secondary);
    margin: 0;
}

.auth-footer a {
    color: var(--auth-accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

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

/* Theme Toggle (if needed on auth pages) */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--auth-bg-primary);
    border: 1px solid var(--auth-border-color);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 100;
    box-shadow: 0 2px 8px var(--auth-shadow);
}

.theme-toggle:hover {
    background-color: var(--auth-bg-secondary);
    transform: scale(1.05);
}

.theme-toggle i {
    font-size: 20px;
    color: var(--auth-text-primary);
}

/* Responsive */
@media (max-width: 480px) {
    .auth-container {
        padding: 32px 24px;
        margin: 16px;
    }
    
    .auth-title {
        font-size: 24px;
    }
    
    .theme-toggle {
        top: 16px;
        right: 16px;
        width: 40px;
        height: 40px;
    }
}

/* Loading state */
.submit-btn.loading {
    position: relative;
    color: transparent;
}

.submit-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid white;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* QR Code Login Styles */
.qr-login-section {
    margin-top: 32px;
}

.login-form-section {
    margin-top: 32px;
}

.qr-divider {
    text-align: center;
    margin-bottom: 24px;
    position: relative;
}

.qr-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background-color: var(--auth-border-color);
}

.qr-divider span {
    position: relative;
    background-color: var(--auth-bg-primary);
    padding: 0 16px;
    color: var(--auth-text-secondary);
    font-size: 14px;
}

.qr-container {
    text-align: center;
}

.qr-container .auth-switch-btn {
    margin-top: 20px;
}

.login-form-section .auth-switch-btn {
    margin-top: 20px;
}

.qr-container h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--auth-text-primary);
    margin-bottom: 8px;
}

.qr-description {
    font-size: 14px;
    color: var(--auth-text-secondary);
    margin-bottom: 24px;
}

.qr-code-wrapper {
    position: relative;
    display: inline-block;
    padding: 20px;
    background-color: var(--auth-bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--auth-border-color);
    margin-bottom: 16px;
}

.qr-code-wrapper canvas,
.qr-code-wrapper .qrcode-container {
    display: block;
    max-width: 100%;
    height: auto;
}

.qr-code-wrapper .qrcode-container img,
.qr-code-wrapper .qrcode-container canvas {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}

.qr-loading {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 250px;
    color: var(--auth-text-secondary);
}

.qr-loading i {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--auth-accent-color);
}

.qr-loading p {
    font-size: 14px;
    margin: 0;
}

.qr-refresh-info {
    font-size: 12px;
    color: var(--auth-text-secondary);
    margin: 0;
}

[data-theme="dark"] .qr-code-wrapper {
    background-color: var(--auth-bg-secondary);
    border-color: var(--auth-border-color);
}

/* Auth Switch Button */
.auth-switch-btn {
    width: 100%;
    padding: 12px 16px;
    background-color: transparent !important;
    color: var(--auth-accent-color) !important;
    border: 1px solid var(--auth-border-color) !important;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 16px;
    font-family: inherit;
    display: flex !important;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-sizing: border-box;
    text-decoration: none;
    outline: none;
}

.auth-switch-btn:hover {
    background-color: var(--auth-bg-secondary) !important;
    border-color: var(--auth-accent-color) !important;
    color: var(--auth-accent-color) !important;
}

.auth-switch-btn:active {
    transform: scale(0.98);
}

.auth-switch-btn i {
    font-size: 16px;
    flex-shrink: 0;
}