:root{--color-bg-primary: #000000;--color-bg-secondary: #0a0a0a;--color-bg-tertiary: #141414;--color-bg-card: #0a0a0a;--color-bg-hover: #1a1a1a;--color-text-primary: #ffffff;--color-text-secondary: #b3b3b3;--color-text-muted: #737373;--color-accent-primary: #ffffff;--color-accent-hover: #e6e6e6;--color-accent-subtle: rgba(255, 255, 255, .08);--color-accent-text: #000000;--color-success: #22c55e;--color-success-subtle: rgba(34, 197, 94, .15);--color-warning: #f59e0b;--color-warning-subtle: rgba(245, 158, 11, .15);--color-error: #ef4444;--color-error-subtle: rgba(239, 68, 68, .15);--color-info: #3b82f6;--color-info-subtle: rgba(59, 130, 246, .15);--color-border: rgba(255, 255, 255, .12);--color-border-hover: rgba(255, 255, 255, .24);--bg: var(--color-bg-primary);--bg-secondary: var(--color-bg-secondary);--card-bg: var(--color-bg-card);--border: var(--color-border);--border-color: var(--color-border);--primary: var(--color-accent-primary);--primary-color: var(--color-accent-primary);--text-muted: var(--color-text-muted);--text-color: var(--color-text-primary);--text-primary: var(--color-text-primary);--text-secondary: var(--color-text-secondary);--success: var(--color-success);--warning: var(--color-warning);--error: var(--color-error);--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.25rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .1);--shadow-md: 0 4px 12px rgba(0, 0, 0, .15);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .2);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "SF Mono", "Monaco", "Fira Code", monospace;--text-xs: .875rem;--text-sm: 1rem;--text-base: 1.125rem;--text-lg: 1.25rem;--text-xl: 1.5rem;--text-2xl: 1.875rem;--text-3xl: 2.25rem;--text-4xl: 3rem;--touch-target: 48px;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--z-dropdown: 100;--z-modal: 200;--z-toast: 300;--safe-area-top: env(safe-area-inset-top, 0px);--safe-area-bottom: env(safe-area-inset-bottom, 0px);--safe-area-left: env(safe-area-inset-left, 0px);--safe-area-right: env(safe-area-inset-right, 0px)}[data-theme=light]{--color-bg-primary: #ffffff;--color-bg-secondary: #fafafa;--color-bg-tertiary: #f0f0f0;--color-bg-card: #ffffff;--color-bg-hover: #f5f5f5;--color-text-primary: #000000;--color-text-secondary: #4d4d4d;--color-text-muted: #8c8c8c;--color-accent-primary: #000000;--color-accent-hover: #333333;--color-accent-subtle: rgba(0, 0, 0, .05);--color-accent-text: #ffffff;--color-success: #000000;--color-success-subtle: rgba(0, 0, 0, .08);--color-warning: #4d4d4d;--color-error: #000000;--color-border: rgba(0, 0, 0, .12);--color-border-hover: rgba(0, 0, 0, .24);--bg: var(--color-bg-primary);--card-bg: var(--color-bg-card);--border: var(--color-border);--primary: var(--color-accent-primary);--text-muted: var(--color-text-muted);--text-color: var(--color-text-primary)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}body{font-family:var(--font-sans);font-size:var(--text-base);background-color:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.6;min-height:100vh;min-height:100dvh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;padding-top:var(--safe-area-top);padding-bottom:var(--safe-area-bottom);padding-left:var(--safe-area-left);padding-right:var(--safe-area-right)}#root{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;letter-spacing:-.02em}h1{font-size:var(--text-3xl)}h2{font-size:var(--text-2xl)}h3{font-size:var(--text-xl)}h4{font-size:var(--text-lg)}p{color:var(--color-text-secondary);font-size:var(--text-base)}a{color:var(--color-accent-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-hover)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);min-height:var(--touch-target);padding:.875rem 1.5rem;font-size:var(--text-base);font-weight:500;border-radius:var(--radius-lg);border:none;cursor:pointer;transition:all var(--transition-base);white-space:nowrap;user-select:none;-webkit-user-select:none}.btn-primary{background:var(--color-accent-primary);color:var(--color-accent-text)}.btn-primary:hover{background:var(--color-accent-hover)}.btn-primary:active{transform:scale(.98)}.btn-secondary{background:transparent;color:var(--color-text-primary);border:1px solid var(--color-border-hover)}.btn-secondary:hover{background:var(--color-bg-tertiary)}.btn-large{padding:1rem 2rem;font-size:var(--text-lg);min-height:56px}.btn-full{width:100%}.btn-icon{display:inline-flex;align-items:center;gap:var(--space-sm)}.btn-icon .icon{font-size:1.25em}.card{background:var(--color-bg-card);border-radius:var(--radius-lg);border:1px solid var(--color-border);padding:var(--space-lg);transition:all var(--transition-base)}.card:hover{border-color:var(--color-border-hover)}.input{width:100%;min-height:var(--touch-target);padding:.875rem 1rem;font-size:var(--text-base);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-primary);transition:all var(--transition-fast)}.input:focus{outline:none;border-color:var(--color-accent-primary);background:var(--color-bg-tertiary)}.input::placeholder{color:var(--color-text-muted)}.drop-zone{border:2px dashed var(--color-border-hover);border-radius:var(--radius-xl);padding:var(--space-3xl) var(--space-xl);text-align:center;cursor:pointer;transition:all var(--transition-base);background:var(--color-bg-secondary)}.drop-zone:hover,.drop-zone.active{border-color:var(--color-accent-primary);background:var(--color-accent-subtle)}.progress-bar{width:100%;height:8px;background:var(--color-bg-tertiary);border-radius:var(--radius-full);overflow:hidden}.progress-bar-fill{height:100%;background:var(--color-accent-primary);border-radius:var(--radius-full);transition:width var(--transition-base)}.privacy-badge{display:inline-flex;align-items:center;gap:var(--space-xs);padding:.5rem .875rem;background:var(--color-success-subtle);color:var(--color-success);font-size:var(--text-sm);font-weight:500;border-radius:var(--radius-full)}.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-md)}@media(min-width:480px){.tool-grid{grid-template-columns:repeat(3,1fr)}}@media(min-width:768px){.tool-grid{grid-template-columns:repeat(4,1fr)}}.tool-card{display:flex;flex-direction:column;align-items:center;gap:var(--space-sm);min-height:120px;padding:var(--space-lg);background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);text-decoration:none;color:var(--color-text-primary);transition:all var(--transition-base);text-align:center}.tool-card:hover{transform:translateY(-2px);border-color:var(--color-accent-primary)}.tool-card:active{transform:scale(.98)}.tool-card-icon{font-size:1.75rem;display:flex;align-items:center;justify-content:center;width:52px;height:52px;background:var(--color-bg-tertiary);border-radius:var(--radius-md)}.tool-card-title{font-size:var(--text-sm);font-weight:600}.tool-card-desc{font-size:var(--text-xs);color:var(--color-text-muted)}.page{flex:1;display:flex;flex-direction:column;max-width:720px;margin:0 auto;width:100%;padding:var(--space-lg)}.page-header{padding:var(--space-xl) 0;text-align:center}.page-title{margin-bottom:var(--space-sm)}.page-description{color:var(--color-text-secondary);font-size:var(--text-base)}.header{display:flex;align-items:center;justify-content:space-between;min-height:56px;padding:var(--space-md) var(--space-lg);border-bottom:1px solid var(--color-border);background:var(--color-bg-primary);position:sticky;top:0;z-index:var(--z-dropdown)}.header-logo{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--text-lg);font-weight:600;color:var(--color-text-primary);text-decoration:none;min-height:var(--touch-target)}.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-md);min-height:200px}.spinner{width:40px;height:40px;border:3px solid var(--color-bg-tertiary);border-top-color:var(--color-accent-primary);border-radius:50%;animation:spin .8s linear infinite}.message{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md) var(--space-lg);border-radius:var(--radius-md);font-size:var(--text-base)}.message-success{background:var(--color-success-subtle);color:var(--color-success);border:1px solid rgba(52,211,153,.3)}.message-error{background:#f871711a;color:var(--color-error);border:1px solid rgba(248,113,113,.3)}.message-icon{font-size:1.5rem}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.mt-sm{margin-top:var(--space-sm)}.mt-md{margin-top:var(--space-md)}.mt-lg{margin-top:var(--space-lg)}.mt-xl{margin-top:var(--space-xl)}.mb-sm{margin-bottom:var(--space-sm)}.mb-md{margin-bottom:var(--space-md)}.mb-lg{margin-bottom:var(--space-lg)}.mb-xl{margin-bottom:var(--space-xl)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--space-sm)}.gap-md{gap:var(--space-md)}.gap-lg{gap:var(--space-lg)}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .25s ease-out}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:focus-visible{outline:2px solid var(--color-accent-primary);outline-offset:2px}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}.no-scrollbar::-webkit-scrollbar{display:none}.language-switcher{display:flex;align-items:center;gap:.25rem;position:relative}.quick-english-btn{background:var(--primary);color:#fff;border:none;border-radius:var(--radius);padding:.25rem .5rem;font-size:.75rem;font-weight:600;cursor:pointer;transition:background .2s ease,transform .1s ease}.quick-english-btn:hover{background:var(--primary-dark, #005bb5);transform:scale(1.05)}.quick-english-btn:active{transform:scale(.98)}.language-toggle{display:flex;align-items:center;gap:.35rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:.35rem .5rem;cursor:pointer;font-size:.85rem;transition:background .2s ease,border-color .2s ease}.language-toggle:hover{background:var(--surface-hover, var(--background));border-color:var(--primary)}.language-flag{font-size:1rem;line-height:1}.language-code{font-weight:500;font-size:.75rem;color:var(--text-secondary)}.dropdown-arrow{font-size:.6rem;color:var(--text-secondary);margin-left:.1rem}.language-dropdown{position:absolute;top:100%;right:0;margin-top:.5rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 24px #00000026;z-index:1000;min-width:200px;max-height:400px;overflow-y:auto;animation:dropdown-appear .15s ease-out}@keyframes dropdown-appear{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.language-group{padding:.25rem 0}.language-group:not(:last-child){border-bottom:1px solid var(--border)}.language-group-label{padding:.5rem .75rem .25rem;font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary)}.language-option{display:flex;align-items:center;gap:.5rem;width:100%;padding:.5rem .75rem;background:none;border:none;cursor:pointer;text-align:left;font-size:.9rem;color:var(--text);transition:background .15s ease}.language-option:hover{background:var(--surface-hover, var(--background))}.language-option.active{background:var(--primary-light, rgba(0, 112, 243, .1));color:var(--primary)}.language-name{flex:1}.check-mark{color:var(--primary);font-size:.85rem}[dir=rtl] .language-switcher{flex-direction:row-reverse}[dir=rtl] .language-dropdown{right:auto;left:0}[dir=rtl] .language-option{text-align:right;flex-direction:row-reverse}@media(max-width:480px){.language-code{display:none}.language-toggle{padding:.35rem}.language-dropdown{min-width:180px;max-height:300px}}.header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md);border-bottom:1px solid var(--color-border);background:var(--color-bg-primary);position:sticky;top:0;z-index:var(--z-dropdown)}.header-logo{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--text-xl);font-weight:700;color:var(--color-text-primary);text-decoration:none}.header-logo-icon{font-size:1.5rem}.header-logo:hover{color:var(--color-accent-primary)}.theme-toggle{display:flex;align-items:center;justify-content:center;width:var(--touch-target);height:var(--touch-target);background:transparent;border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;font-size:1.25rem;transition:all var(--transition-fast)}.theme-toggle:hover{background:var(--color-bg-hover);border-color:var(--color-border-hover)}.header-actions{display:flex;align-items:center;gap:var(--space-sm)}[dir=rtl] .header,[dir=rtl] .header-logo,[dir=rtl] .header-actions{flex-direction:row-reverse}.language-suggestion{position:fixed;bottom:16px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:12px;padding:10px 16px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:50px;box-shadow:0 4px 20px #667eea66;z-index:1000;font-size:14px;animation:slideUp .3s ease-out}.language-suggestion.rtl{direction:rtl}@keyframes slideUp{0%{transform:translate(-50%) translateY(100%);opacity:0}to{transform:translate(-50%) translateY(0);opacity:1}}.lang-flag{font-size:20px}.lang-message{font-weight:500}.lang-switch-btn{background:#fff;color:#667eea;border:none;padding:6px 14px;border-radius:20px;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s}.lang-switch-btn:hover{transform:scale(1.05);box-shadow:0 2px 10px #0003}.lang-dismiss-btn{background:transparent;border:none;color:#fffc;font-size:16px;cursor:pointer;padding:4px 8px;border-radius:50%;transition:background .2s}.lang-dismiss-btn:hover{background:#fff3;color:#fff}@media(max-width:600px){.language-suggestion{bottom:12px;left:12px;right:12px;transform:none;border-radius:12px;justify-content:center}@keyframes slideUp{0%{transform:translateY(100%);opacity:0}to{transform:translateY(0);opacity:1}}}.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-md);min-height:50vh;color:var(--color-text-secondary)}.spinner{width:48px;height:48px;border:3px solid var(--color-bg-tertiary);border-top-color:var(--color-accent-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}