/* ==========================================================================
   Premium Dark Theme - Password Generator
   Created by: vnoisy
   Year: 2025
   Description: Automotive engineering menu password generator with AES-CMAC
   ========================================================================== */

:root {
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-primary-light: rgba(99, 102, 241, 0.1);
    
    --color-success: #10b981;
    --color-success-light: rgba(16, 185, 129, 0.1);
    
    --color-error: #ef4444;
    --color-error-light: rgba(239, 68, 68, 0.1);
    
    --color-bg-primary: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-tertiary: #334155;
    
    --color-text-primary: #f1f5f9;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    
    --color-border: rgba(148, 163, 184, 0.1);
    --color-border-focus: var(--color-primary);
    
    --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, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--color-text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

/* ==========================================================================
   Password Generator Container
   ========================================================================== */

.password-generator-container {
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
    animation: fadeInUp 0.6s ease-out;
    position: relative;
}

/* ==========================================================================
   Language Selector
   ========================================================================== */

.language-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.language-dropdown {
    padding: 0.5rem 1rem;
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    outline: none;
    min-width: 150px;
}

.language-dropdown:hover {
    border-color: var(--color-primary);
    background: var(--color-bg-tertiary);
}

.language-dropdown:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.language-dropdown option {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    padding: 0.5rem;
}

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

.generator-card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
}

/* ==========================================================================
   Card Header
   ========================================================================== */

.card-header {
    text-align: center;
    padding: 1.5rem 1.5rem 1rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(99, 102, 241, 0.02) 100%);
    border-bottom: 1px solid var(--color-border);
}

/* Collapse Section Styles */
.collapse-section {
    margin-top: 1rem;
}

.collapse-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.collapse-toggle:hover {
    background: var(--color-primary-light);
    color: var(--color-primary-hover);
}

.collapse-toggle .chevron-icon {
    transition: transform var(--transition-normal);
}

.collapse-toggle[aria-expanded="true"] .chevron-icon {
    transform: rotate(180deg);
}

.collapse-toggle span {
    font-size: 0.8125rem;
    letter-spacing: 0.01em;
}

/* vnoisy - Counter Badge Styles */
.counter-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    margin-top: 1rem;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.counter-badge svg {
    width: 16px;
    height: 16px;
}

.counter-badge strong {
    color: var(--color-text-primary);
    font-weight: 700;
    font-size: 1rem;
    margin-left: 0.25rem;
}

.icon-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-primary-light);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    position: relative;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.icon-wrapper:hover {
    transform: scale(1.05);
    background: rgba(99, 102, 241, 0.15);
}

/* vnoisy - Secret Signature Animation */
.icon-wrapper .secret-signature {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(0deg) scale(0);
    opacity: 0;
    color: var(--color-primary);
    font-weight: 700;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    pointer-events: none;
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.icon-wrapper.reveal-signature svg {
    transform: rotate(360deg) scale(0);
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.icon-wrapper svg {
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.icon-wrapper.reveal-signature .secret-signature {
    transform: translate(-50%, -50%) rotate(360deg) scale(1);
    opacity: 1;
}

.icon-wrapper svg {
    width: 24px;
    height: 24px;
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.3));
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

/* ==========================================================================
   Form Styles
   ========================================================================== */

.generator-form {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
    letter-spacing: 0.025em;
}

.required {
    color: var(--color-error);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.9rem;
    font-family: 'Inter', monospace;
    transition: all var(--transition-normal);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px var(--color-primary-light);
    background: rgba(15, 23, 42, 0.8);
}

.form-input::placeholder {
    color: var(--color-text-muted);
    opacity: 0.6;
}

.input-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 0.375rem;
    font-style: italic;
}

/* ==========================================================================
   reCAPTCHA
   ========================================================================== */

.recaptcha-wrapper {
    margin: 1.5rem 0;
    display: flex;
    justify-content: center;
}

.g-recaptcha {
    display: inline-block;
}

/* ==========================================================================
   Button
   ========================================================================== */

.btn-generate {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-generate::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-generate:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-generate:hover::before {
    left: 100%;
}

.btn-generate:active {
    transform: translateY(0);
}

.btn-generate:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-text,
.btn-loader {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* ==========================================================================
   Spinner
   ========================================================================== */

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ==========================================================================
   Result Section
   ========================================================================== */

.result-section {
    padding: 1.5rem;
    background: linear-gradient(180deg, rgba(16, 185, 129, 0.05) 0%, transparent 100%);
    border-top: 1px solid var(--color-border);
    animation: slideDown 0.4s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    color: var(--color-success);
}

.result-header svg {
    flex-shrink: 0;
}

.result-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.password-display {
    margin-bottom: 1.5rem;
}

.password-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

.password-value-wrapper {
    display: flex;
    gap: 0.5rem;
}

.password-value {
    flex: 1;
    padding: 1rem;
    background: var(--color-bg-primary);
    border: 2px solid var(--color-success);
    border-radius: var(--radius-md);
    color: var(--color-success);
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Courier New', monospace;
    text-align: center;
    letter-spacing: 0.15em;
}

.btn-copy {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-copy:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    transform: scale(1.05);
}

.btn-copy:active {
    transform: scale(0.95);
}

/* ==========================================================================
   Calculation Details
   ========================================================================== */

.calculation-details {
    margin-top: 1.5rem;
}

.details-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.details-toggle:hover {
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
}

.details-toggle .chevron {
    transition: transform var(--transition-normal);
}

.details-toggle.active .chevron {
    transform: rotate(180deg);
}

.details-content {
    padding: 1rem;
    margin-top: 0.5rem;
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.detail-item {
    margin-bottom: 1rem;
}

.detail-item:last-child {
    margin-bottom: 0;
}

.detail-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: 0.375rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-value {
    display: block;
    padding: 0.75rem;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    word-break: break-all;
    border: 1px solid var(--color-border);
}

.detail-value.highlight {
    background: var(--color-success-light);
    color: var(--color-success);
    border-color: var(--color-success);
    font-weight: 700;
    font-size: 1rem;
}

/* ==========================================================================
   Error Section
   ========================================================================== */

.error-section {
    padding: 2rem;
    background: var(--color-error-light);
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: shake 0.4s ease-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.error-icon {
    flex-shrink: 0;
    color: var(--color-error);
}

#errorMessage {
    color: var(--color-text-primary);
    font-size: 0.875rem;
    margin: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.app-footer {
    display: none; /* Footer gizlendi */
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 640px) {
    .language-selector {
        position: static;
        margin-bottom: 1rem;
        display: flex;
        justify-content: center;
    }
    
    .language-dropdown {
        width: 100%;
        max-width: 200px;
    }
    
    .card-title {
        font-size: 1.5rem;
    }
    
    .card-subtitle {
        font-size: 0.875rem;
    }
    
    .generator-form,
    .result-section {
        padding: 1.5rem;
    }
    
    .password-value {
        font-size: 1.25rem;
    }
    
    .btn-copy {
        width: 40px;
        height: 40px;
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    body {
        background: white;
        color: black;
    }
    
    .btn-generate,
    .btn-copy,
    .recaptcha-wrapper,
    .app-footer {
        display: none;
    }
}