/* TEXTY - Final Version CSS */

/* === CSS RESET & VARIABLES === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light theme (default) - Your warm #FCFCF9 background */
    --color-bg-primary: #FCFCF9;
    --color-bg-secondary: #FCFCF9;
    --color-bg-tertiary: #f3f4f6;
    --color-text-primary: #111827;
    --color-text-secondary: #6b7280;
    --color-text-muted: #9ca3af;
    --color-text-inverse: #ffffff;
    --color-border: #e5e7eb;
    --color-border-focus: #000000;
    --color-primary: #000000;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);

    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    
    --transition: 0.2s ease;
}

/* Dark theme - Deep navy #0f172a background */
[data-theme="dark"] {
    --color-bg-primary: #0f172a;
    --color-bg-secondary: #0f172a;
    --color-bg-tertiary: #1e293b;
    --color-text-primary: #f8fafc;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-text-inverse: #0f172a;
    --color-border: #334155;
    --color-border-focus: #f8fafc;
    --color-primary: #ffffff;
    
    --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);
}

/* === BASE STYLES === */
body {
    font-family: var(--font-family);
    font-weight: 400;
    line-height: 1.6;
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    transition: background-color var(--transition), color var(--transition);
}

/* === THEME TOGGLE === */
.theme-toggle {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.theme-toggle:hover {
    border-color: var(--color-text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.theme-toggle:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .theme-toggle:focus {
    box-shadow: 0 0 0 3px rgba(248, 250, 252, 0.1);
}

/* === LAYOUT & SECTIONS === */
.main {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
}

.tool-section {
    padding-bottom: var(--space-xl);
    margin-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.tool-section:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
}

.section-header {
    margin-bottom: var(--space-lg);
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
}

.brand-subtitle {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin: 0;
}

/* === BUTTONS === */
.button-group-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.button-group {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition);
    outline: none;
    white-space: nowrap;
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    min-height: 36px;
}

.btn:hover:not(:disabled) {
    border-color: var(--color-text-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .btn:focus {
    box-shadow: 0 0 0 3px rgba(248, 250, 252, 0.1);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-text-primary);
    border-color: var(--color-text-primary);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

.btn-outline:hover:not(:disabled) {
    background: var(--color-bg-tertiary);
    border-color: var(--color-text-primary);
}

.btn-case {
    font-size: 0.8rem;
    padding: var(--space-xs) var(--space-sm);
    min-height: 32px;
}

/* === TEXT AREAS === */
.text-area {
    width: 100%;
    padding: var(--space-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    resize: vertical;
    outline: none;
    transition: border-color var(--transition);
}

.text-area:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .text-area:focus {
    box-shadow: 0 0 0 3px rgba(248, 250, 252, 0.05);
}

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

.primary-textarea {
    min-height: 320px;
}

.text-area[readonly] {
    background: var(--color-bg-tertiary);
    opacity: 0.9;
}

/* === STATS === */
.stats-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.stat-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-xs) var(--space-md);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    background: var(--color-bg-primary);
    white-space: nowrap;
}

.stat-item span {
    font-weight: 700;
    color: var(--color-text-primary);
    margin-right: var(--space-xs);
}

/* === KEYWORDS === */
.keywords-section {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.section-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.keywords-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    min-height: 32px;
    align-items: flex-start;
}

.keyword-tag {
    background: var(--color-text-primary);
    color: var(--color-text-inverse);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
}

.no-keywords {
    color: var(--color-text-muted);
    font-style: italic;
    font-size: 0.8rem;
}

/* === FORMATTING DETECTION === */
.formatting-section {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.formatting-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.formatting-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.formatting-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.formatting-values {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
}

.formatting-tag {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.color-tag {
    gap: var(--space-sm);
}

.color-swatch {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    border: 1px solid var(--color-border);
    display: inline-block;
    flex-shrink: 0;
}

/* === FORMS === */
.form-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-select, .form-input {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    transition: all var(--transition);
    outline: none;
}

.form-select:focus, .form-input:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .form-select:focus, 
[data-theme="dark"] .form-input:focus {
    box-shadow: 0 0 0 3px rgba(248, 250, 252, 0.05);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 8px center;
    background-repeat: no-repeat;
    background-size: 16px 16px;
    padding-right: 2.5rem;
}

[data-theme="dark"] .form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
}

/* === LOADING STATE === */
.btn.loading {
    color: transparent;
    pointer-events: none;
    position: relative;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* === FOOTER === */
.footer {
    text-align: center;
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
}

.footer .container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-text {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.footer-link {
    color: var(--color-text-primary);
    font-weight: 600;
    text-decoration: none;
    transition: color var(--transition);
}

.footer-link:hover {
    color: var(--color-text-secondary);
}

/* === TOAST === */
.toast {
    position: fixed;
    bottom: var(--space-lg);
    left: 50%;
    transform: translate(-50%, 150%);
    background: var(--color-text-primary);
    color: var(--color-text-inverse);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
    z-index: 1000;
    font-weight: 500;
    font-size: 0.875rem;
}

.toast.show {
    transform: translate(-50%, 0);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .main {
        padding: var(--space-lg) var(--space-md);
    }

    .tool-section {
        padding-bottom: var(--space-lg);
    }

    .button-group-toolbar {
        gap: var(--space-xs);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .stats-container {
        gap: var(--space-xs);
    }

    .stat-item {
        font-size: 0.75rem;
        padding: var(--space-xs) var(--space-sm);
    }

    .theme-toggle {
        top: var(--space-md);
        right: var(--space-md);
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 480px) {
    .primary-textarea {
        min-height: 240px;
    }

    .btn {
        font-size: 0.8rem;
        padding: var(--space-xs) var(--space-sm);
    }

    .brand-title {
        font-size: 1.125rem;
    }

    .brand-subtitle {
        font-size: 0.8rem;
    }
}