:root{--bg-primary: #f8fafc;--bg-secondary: #f1f5f9;--text-primary: #1e293b;--text-secondary: #475569;--text-muted: #94a3b8;--card-bg: #ffffff;--header-bg: rgba(255, 255, 255, .85);--input-bg: #ffffff;--hover-bg: rgba(0, 0, 0, .03);--chevron-bg: #f1f5f9;--border-color: #e2e8f0;--border-hover: #cbd5e1;--primary-color: #6366f1;--primary-glow: rgba(99, 102, 241, .15);--gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--tag-bg: rgba(99, 102, 241, .1);--tag-color: #6366f1;--tag-secondary-bg: #f1f5f9;--danger-bg: rgba(239, 68, 68, .1);--danger-color: #dc2626;--danger-hover: rgba(239, 68, 68, .2);--card-shadow-hover: 0 4px 12px rgba(0, 0, 0, .05);--card-shadow-active: 0 8px 24px rgba(0, 0, 0, .08);--gradient-gold: linear-gradient(135deg, #ffd700 0%, #ffb700 100%);--selector-bg: linear-gradient(135deg, rgba(102, 126, 234, .05) 0%, rgba(118, 75, 162, .1) 50%, rgba(240, 147, 251, .05) 100%);--card-shadow: 0 4px 6px -1px rgba(0, 0, 0, .1);--card-shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, .25)}[data-theme=dark]{--bg-primary: #0f172a;--bg-secondary: #1e293b;--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--card-bg: #1e293b;--header-bg: rgba(30, 41, 59, .85);--input-bg: #0f172a;--hover-bg: rgba(255, 255, 255, .05);--chevron-bg: #334155;--border-color: #334155;--border-hover: #475569;--primary-color: #818cf8;--primary-glow: rgba(129, 140, 248, .2);--gradient-primary: linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);--tag-bg: rgba(129, 140, 248, .15);--tag-color: #a5b4fc;--tag-secondary-bg: #334155;--danger-bg: rgba(239, 68, 68, .15);--danger-color: #f87171;--danger-hover: rgba(239, 68, 68, .25);--card-shadow-hover: 0 4px 12px rgba(0, 0, 0, .4);--card-shadow-active: 0 8px 24px rgba(0, 0, 0, .5);--gradient-gold: linear-gradient(135deg, #ffd700 0%, #ffb700 100%);--selector-bg: linear-gradient(135deg, rgba(15, 23, 42, .95) 0%, rgba(30, 41, 59, .95) 100%);--card-shadow: 0 4px 6px -1px rgba(0, 0, 0, .3);--card-shadow-xl: 0 25px 50px -12px 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ease}.logout-btn:hover{background:var(--danger-hover)}.theme-toggle{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--border-color);background:var(--card-bg);cursor:pointer;transition:all .2s ease}.theme-toggle:hover{background:var(--hover-bg);transform:scale(1.05)}.theme-toggle:active{transform:scale(.95)}.theme-icon{font-size:1.25rem}@media(max-width:480px){.logo h1{font-size:1.2rem}.user-bar{padding:.4rem .8rem;gap:.5rem}.user-info{font-size:.8rem}.logout-btn{padding:.4rem .8rem;font-size:.8rem}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-15px)}}@keyframes scaleIn{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}@keyframes fadeIn{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes 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#0003}.custom-limit-wrapper{display:flex;align-items:center}.custom-limit-input{width:100%;padding:.75rem;border:2px solid transparent;border-radius:.75rem;background:var(--card-bg);color:var(--text-primary);font-weight:600;text-align:center;transition:all .2s ease;outline:none;font-size:1rem}.custom-limit-input::placeholder{color:var(--text-muted)}.custom-limit-input:hover{border-color:var(--primary-glow)}.custom-limit-input:focus,.custom-limit-input.active{border-color:var(--primary-color);background:var(--bg-secondary);box-shadow:0 0 0 4px 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#6366f180}.landing-btn-secondary{background:var(--card-bg);color:var(--text-primary);border:2px solid var(--border-color)}.landing-btn-secondary:hover{border-color:var(--primary-color);background:var(--hover-bg)}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem;background:var(--selector-bg);position:relative}.auth-container:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 0%,rgba(99,102,241,.1) 0%,transparent 50%);pointer-events:none}.auth-card{width:100%;max-width:420px;background:var(--card-bg);border-radius:24px;padding:2.5rem;box-shadow:var(--card-shadow-xl);border:1px solid var(--border-color);position:relative;z-index:1}.auth-back-btn{position:absolute;top:-60px;left:0;background:var(--card-bg);border:1px solid var(--border-color);padding:.75rem 1.25rem;border-radius:12px;cursor:pointer;display:flex;align-items:center;gap:.5rem;color:var(--text-secondary);font-size:.9rem;transition:all .2s 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#00000014}.auth-tab:hover:not(.active){color:var(--text-primary)}.auth-form{display:flex;flex-direction:column;gap:1.25rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-label{font-size:.9rem;font-weight:600;color:var(--text-primary)}.form-input{padding:1rem 1.25rem;background:var(--input-bg);border:2px solid var(--border-color);border-radius:12px;font-size:1rem;color:var(--text-primary);transition:all .2s ease}.form-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px var(--primary-glow)}.form-input::placeholder{color:var(--text-muted)}.form-hint{font-size:.8rem;color:var(--text-muted)}.otp-container{display:flex;gap:.75rem;justify-content:center}.otp-input{width:56px;height:64px;text-align:center;font-size:1.5rem;font-weight:700;background:var(--input-bg);border:2px solid var(--border-color);border-radius:12px;color:var(--text-primary);transition:all .2s ease}.otp-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px var(--primary-glow)}.auth-submit-btn{padding:1rem;background:var(--gradient-primary);color:#fff;border:none;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;margin-top:.5rem}.auth-submit-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 15px #6366f166}.auth-submit-btn:disabled{opacity:.6;cursor:not-allowed}.auth-link-btn{background:none;border:none;color:var(--primary-color);font-size:.9rem;font-weight:500;cursor:pointer;padding:0;transition:color .2s ease}.auth-link-btn:hover{color:var(--text-primary);text-decoration:underline}.step-indicator{display:flex;justify-content:center;gap:.5rem;margin-bottom:2rem}.step-dot{width:10px;height:10px;border-radius:50%;background:var(--border-color);transition:all .3s 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spin{to{transform:rotate(360deg)}}@media(max-width:480px){.landing-title{font-size:2rem}.landing-subtitle{font-size:1rem}.landing-features{flex-direction:column;gap:1rem}.landing-btn{width:100%;justify-content:center}.auth-card{padding:1.5rem;margin:1rem}.otp-input{width:48px;height:56px;font-size:1.25rem}}.payment-modal-overlay{position:fixed;inset:0;background:#000000e6;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:9999;padding:1rem;animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.payment-modal{background:#fff;border-radius:1.5rem;padding:2rem;max-width:480px;width:100%;max-height:90vh;overflow-y:auto;position:relative;box-shadow:0 25px 50px -12px #00000080;animation:slideUp .3s ease-out;z-index:10000}[data-theme=dark] .payment-modal{background:#1e1e2e}.payment-modal-close{position:absolute;top:1rem;right:1rem;background:none;border:none;font-size:1.75rem;color:var(--color-text-muted);cursor:pointer;width:2.5rem;height:2.5rem;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .2s ease}.payment-modal-close:hover{background:var(--color-surface-hover);color:var(--color-text)}.payment-modal-icon{font-size:4rem;text-align:center;margin-bottom:1rem;animation:bounce .5s ease-out}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.payment-modal-title{font-size:1.5rem;font-weight:700;text-align:center;color:var(--color-text);margin:0 0 .75rem}.payment-modal-description{text-align:center;color:var(--color-text-muted);font-size:.9375rem;line-height:1.6;margin:0 0 1.5rem}.payment-modal-plans{display:flex;flex-direction:column;gap:1rem;margin-bottom:1.5rem}.payment-plan{border:2px solid var(--color-border);border-radius:1rem;padding:1.25rem;position:relative;transition:all .2s ease;cursor:pointer}.payment-plan:hover{border-color:var(--color-primary);transform:translateY(-2px)}.payment-plan.selected{border-color:var(--color-primary);background:#6366f108;box-shadow:0 0 0 2px #6366f133}.payment-plan.selected.premium{background:linear-gradient(135deg,#6366f11a,#a855f71a)}.payment-plan.premium{border-color:var(--color-primary);background:linear-gradient(135deg,#6366f10d,#a855f70d)}.plan-badge{position:absolute;top:-.75rem;left:50%;transform:translate(-50%);background:linear-gradient(135deg,var(--color-primary),var(--color-primary-hover));color:#fff;font-size:.75rem;font-weight:600;padding:.25rem 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.payment-plan.premium{background:linear-gradient(135deg,#6366f11a,#a855f71a)}@media(max-width:480px){.payment-modal{padding:1.5rem;border-radius:1rem}.payment-modal-icon{font-size:3rem}.payment-modal-title{font-size:1.25rem}}.snackbar-container{position:fixed;bottom:1.5rem;left:50%;transform:translate(-50%);z-index:2000;display:flex;flex-direction:column;gap:.5rem;max-width:90%;width:400px}.snackbar-item{display:flex;align-items:center;gap:.75rem;padding:.875rem 1rem;border-radius:.75rem;background:var(--color-surface);box-shadow:0 10px 25px #00000026;animation:slideUp .3s ease-out;border-left:4px solid}.snackbar-item.exiting{animation:slideDown .3s ease-out forwards}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(20px)}}.snackbar-item.info{border-left-color:#3b82f6}.snackbar-item.success{border-left-color:#10b981}.snackbar-item.warning{border-left-color:#f59e0b}.snackbar-item.error{border-left-color:#ef4444}.snackbar-icon{font-size:1.125rem;flex-shrink:0}.snackbar-message{flex:1;font-size:.9375rem;color:var(--color-text);line-height:1.4}.snackbar-close{background:none;border:none;color:var(--color-text-muted);font-size:1.25rem;cursor:pointer;padding:0;width:1.5rem;height:1.5rem;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .2s ease;flex-shrink:0}.snackbar-close:hover{background:var(--color-surface-hover);color:var(--color-text)}[data-theme=dark] .snackbar-item{box-shadow:0 10px 25px #0006}@media(max-width:480px){.snackbar-container{bottom:1rem;width:calc(100% - 2rem)}.snackbar-item{padding:.75rem}}.app{min-height:100vh;display:flex;flex-direction:column;background:var(--bg-primary)}.main-content{flex:1;padding:2rem 1.5rem}.container{max-width:900px;margin:0 auto}.back-button{display:inline-flex;align-items:center;gap:.5rem;padding:.625rem 1.25rem;margin-bottom:1.5rem;background:var(--card-bg);border:1px solid var(--border-color);border-radius:8px;color:var(--text-primary);font-size:.9rem;font-weight:500;cursor:pointer;transition:all .2s ease}.back-button:hover{background:var(--hover-bg);border-color:var(--primary-color)}.hero{text-align:center;margin-bottom:2rem}.hero h2{font-size:2rem;font-weight:700;color:var(--text-primary);margin:0 0 .5rem;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero p{font-size:1.05rem;color:var(--text-muted);margin:0}.footer{padding:1.5rem;text-align:center;border-top:1px solid var(--border-color);background:var(--card-bg)}.footer p{margin:0;font-size:.9rem;color:var(--text-muted)}.history-button{position:fixed;bottom:2rem;right:2rem;padding:.875rem 1.5rem;background:linear-gradient(135deg,var(--primary-color),#7c3aed);color:#fff;border:none;border-radius:50px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 20px #8b5cf666;z-index:100}.history-button:hover{transform:translateY(-3px);box-shadow:0 8px 30px #8b5cf680}@media(max-width:480px){.hero h2{font-size:1.5rem}.hero p{font-size:.95rem}.main-content{padding:1.5rem 1rem}}