/* ==========================================
   JuiceID - Authentication Styles
   Based on Editorial Minimalism Design
   With Dark Theme Support
   ========================================== */

/* CSS Variables - Light Theme (default) */
:root {
    /* Colors - Warm, sophisticated palette */
    --color-bg: #FFFCF9;
    --color-bg-alt: #FBF8F4;
    --color-bg-elevated: #FFFFFF;
    --color-bg-hover: #F7F3EE;
    
    --color-text-primary: #1A1612;
    --color-text-secondary: #5C5550;
    --color-text-tertiary: #8A8480;
    --color-text-muted: #B5B0AA;
    
    --color-border: #E8E4DE;
    --color-border-light: #F0ECE6;
    --color-border-dark: #D4CFC8;
    
    /* Accent colors */
    --color-primary: #D97706;
    --color-primary-hover: #B45309;
    --color-primary-light: #FEF3C7;
    --color-primary-bg: #FFFBEB;
    
    --color-success: #059669;
    --color-success-light: #D1FAE5;
    --color-warning: #D97706;
    --color-warning-light: #FEF3C7;
    --color-error: #DC2626;
    --color-error-light: #FEE2E2;
    --color-info: #2563EB;
    --color-info-light: #DBEAFE;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-theme: 400ms ease;
    
    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-toast: 400;
}

/* Dark Theme */
[data-theme="dark"] {
    --color-bg: #0F0F0F;
    --color-bg-alt: #1A1A1A;
    --color-bg-elevated: #242424;
    --color-bg-hover: #2A2A2A;
    
    --color-text-primary: #F5F5F5;
    --color-text-secondary: #A0A0A0;
    --color-text-tertiary: #707070;
    --color-text-muted: #505050;
    
    --color-border: #333333;
    --color-border-light: #2A2A2A;
    --color-border-dark: #444444;
    
    --color-primary: #F59E0B;
    --color-primary-hover: #FBBF24;
    --color-primary-light: #422006;
    --color-primary-bg: #1C1917;
    
    --color-success-light: #064E3B;
    --color-warning-light: #422006;
    --color-error-light: #450A0A;
    --color-info-light: #1E3A8A;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    min-height: 100vh;
    transition: background-color var(--transition-theme), color var(--transition-theme);
}

/* ==========================================
   Auth Container - Centered Card Layout
   ========================================== */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    background: var(--color-bg);
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-xl);
    transition: background-color var(--transition-theme), border-color var(--transition-theme);
    animation: fadeInUp 0.5s ease-out;
}

/* ==========================================
   Logo
   ========================================== */
.auth-logo {
    display: block;
    width: 159px;  /* було 138px, +15% = 159px */
    height: auto;
    margin: 0 auto var(--space-8);
    content: url('/static/images/JuiceId_logo2.png');
    animation: fadeIn 0.6s ease-out;
}

/* Темна тема - logo */
[data-theme="dark"] .auth-logo {
    content: url('/static/images/JuiceId_logo.png');
}

/* ==========================================
   Auth Header
   ========================================== */
.auth-welcome,
.auth-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.auth-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
    line-height: var(--leading-tight);
}

.auth-subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

.success-title {
    color: var(--color-success);
}

/* ==========================================
   Auth Buttons
   ========================================== */
.auth-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.auth-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    width: 100%;
    padding: var(--space-4);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.auth-btn:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-primary);
    color: var(--color-text-primary);
}

.auth-btn-primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.auth-btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: white;
}

.auth-btn-secondary {
    background: var(--color-bg-alt);
    border-color: var(--color-border);
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.auth-btn-secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-dark);
}

.auth-btn-submit {
    margin-top: var(--space-4);
}

.btn-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* ==========================================
   Forms
   ========================================== */
.auth-form-content {
    display: flex;
    flex-direction: column;
}

.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-family: var(--font-sans);
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-bg-elevated);
}

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

.form-input-key {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    letter-spacing: 0.05em;
}

/* ==========================================
   Forgot/Back Links
   ========================================== */
.forgot-link {
    display: block;
    text-align: center;
    margin-top: var(--space-6);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.back-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-6);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--color-primary);
}

.back-icon {
    width: 16px;
    height: 16px;
}

/* ==========================================
   Success Page - Key Display
   ========================================== */
.success-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
    background: var(--color-success-light);
    border-radius: var(--radius-full);
}

.success-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-success);
}

.key-section {
    margin: var(--space-6) 0;
}

.key-display {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-top: var(--space-2);
}

.key-display code {
    flex: 1;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-primary);
    word-break: break-all;
    background: transparent;
    padding: 0;
}

.copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.copy-btn:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

.key-warning {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-warning-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
}

.key-warning svg {
    width: 20px;
    height: 20px;
    color: var(--color-warning);
    flex-shrink: 0;
}

.key-warning span {
    font-size: var(--text-sm);
    color: var(--color-warning);
    line-height: var(--leading-normal);
}

/* ==========================================
   Controls Bar (Language & Theme)
   ========================================== */
.controls-bar {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    display: flex;
    gap: var(--space-2);
    z-index: var(--z-sticky);
}

/* Icon Button (Theme Toggle) */
.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.icon-btn:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-dark);
    color: var(--color-text-primary);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

.icon-btn .sun-icon {
    display: none;
}

.icon-btn .moon-icon {
    display: block;
}

[data-theme="dark"] .icon-btn .sun-icon {
    display: block;
}

[data-theme="dark"] .icon-btn .moon-icon {
    display: none;
}

/* Language Selector */
.lang-selector {
    position: relative;
}

.lang-selector-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    font-family: var(--font-sans);
    transition: all var(--transition-fast);
}

.lang-selector-btn:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-dark);
    color: var(--color-text-primary);
}

.lang-selector-btn svg {
    width: 16px;
    height: 16px;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    min-width: 140px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

.lang-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-option:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.lang-option.active {
    color: var(--color-primary);
    font-weight: 500;
}

.lang-option:first-child {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.lang-option:last-child {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ==========================================
   Toast Notifications
   ========================================== */
.toast-container {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    z-index: var(--z-toast);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    max-width: 400px;
    animation: slideIn var(--transition-base) ease;
}

.toast-success {
    border-color: var(--color-success);
}

.toast-error {
    border-color: var(--color-error);
}

.toast-warning {
    border-color: var(--color-warning);
}

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast-success .toast-icon {
    color: var(--color-success);
}

.toast-error .toast-icon {
    color: var(--color-error);
}

.toast-warning .toast-icon {
    color: var(--color-warning);
}

.toast-message {
    flex: 1;
    font-size: var(--text-sm);
    color: var(--color-text-primary);
}

.toast-close {
    padding: var(--space-1);
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.toast-close:hover {
    color: var(--color-text-primary);
}

.toast-close svg {
    width: 16px;
    height: 16px;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ==========================================
   Fade-in Animations
   ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Застосувати до кнопок з послідовною затримкою */
.auth-buttons .auth-btn:nth-child(1) {
    animation: fadeIn 0.4s ease-out 0.2s both;
}

.auth-buttons .auth-btn:nth-child(2) {
    animation: fadeIn 0.4s ease-out 0.3s both;
}

.auth-buttons .auth-btn:nth-child(3) {
    animation: fadeIn 0.4s ease-out 0.4s both;
}

/* ==========================================
   Mobile Responsive
   ========================================== */
@media (max-width: 480px) {
    .auth-container {
        padding: var(--space-3);
    }
    
    .auth-card {
        padding: var(--space-6);
        border-radius: var(--radius-xl);
    }
    
    .auth-logo {
        width: 132px;  /* було 115px, +15% = 132px */
        margin-bottom: var(--space-6);
    }
    
    .auth-title {
        font-size: var(--text-xl);
    }
    
    .auth-welcome,
    .auth-header {
        margin-bottom: var(--space-6);
    }
    
    .auth-btn {
        padding: var(--space-3);
        font-size: var(--text-sm);
    }
    
    .controls-bar {
        top: var(--space-3);
        right: var(--space-3);
    }
    
    .icon-btn {
        width: 36px;
        height: 36px;
    }
    
    .icon-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .toast-container {
        left: var(--space-3);
        right: var(--space-3);
        bottom: var(--space-3);
    }
    
    .toast {
        min-width: auto;
        max-width: none;
    }
    
    @keyframes slideIn {
        from {
            opacity: 0;
            transform: translateY(100%);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

/* ==========================================
   Reduced Motion
   ========================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .auth-card,
    .auth-logo,
    .auth-buttons .auth-btn {
        animation: none;
    }
}

/* ==========================================
   Recover Result Section
   ========================================== */
.recover-result {
    text-align: center;
}

.recover-result.hidden {
    display: none;
}

.recover-result .auth-title {
    margin-bottom: var(--space-4);
}

.recover-result .key-section {
    margin-bottom: var(--space-4);
}

/* Hidden utility class */
.hidden {
    display: none !important;
}

/* ==========================================
   OAuth Authorization Page
   ========================================== */
.error-message {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-error-light);
    border: 1px solid var(--color-error);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.error-message svg {
    width: 20px;
    height: 20px;
    color: var(--color-error);
    flex-shrink: 0;
}

.error-message span {
    font-size: var(--text-sm);
    color: var(--color-error);
    line-height: var(--leading-normal);
}

.divider {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin: var(--space-4) 0;
    color: var(--color-text-tertiary);
    font-size: var(--text-sm);
}

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

.oauth-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

.oauth-actions .auth-btn {
    text-align: center;
}

.oauth-info-footer {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-info-light);
    border-radius: var(--radius-lg);
    margin-top: var(--space-6);
}

.oauth-info-footer svg {
    width: 20px;
    height: 20px;
    color: var(--color-info);
    flex-shrink: 0;
    margin-top: 2px;
}

.oauth-info-footer span {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

[data-theme="dark"] .oauth-info-footer {
    background: var(--color-info-light);
}

[data-theme="dark"] .oauth-info-footer span {
    color: var(--color-text-secondary);
}