:root{--color-bg-primary: #ffffff;--color-bg-secondary: #f8f9fa;--color-bg-tertiary: #e9ecef;--color-bg-input: #ffffff;--color-bg-hover: #f0f0f0;--color-bg-card: #ffffff;--color-text-primary: #212529;--color-text-secondary: #6c757d;--color-text-muted: #adb5bd;--color-text-inverse: #ffffff;--color-border: #dee2e6;--color-border-light: #e9ecef;--color-border-focus: #4a9eff;--color-accent: #4a9eff;--color-accent-hover: #3a8eef;--color-accent-light: rgba(74, 158, 255, .1);--color-success: #28a745;--color-success-hover: #218838;--color-warning: #ffc107;--color-warning-bg: #fff3cd;--color-warning-text: #856404;--color-danger: #dc3545;--color-danger-hover: #c82333;--color-tag-bg: #fff3cd;--color-tag-text: #856404;--color-overlay: rgba(0, 0, 0, .5);--color-diff-old-bg: #f8d7da;--color-diff-old-text: #721c24;--color-diff-new-bg: #d4edda;--color-diff-new-text: #155724;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .15);--radius-sm: 4px;--radius-md: 6px;--radius-lg: 12px;--transition-fast: .15s ease;--transition-normal: .2s ease;--safe-area-inset-top: env(safe-area-inset-top, 0px);--safe-area-inset-right: env(safe-area-inset-right, 0px);--safe-area-inset-bottom: env(safe-area-inset-bottom, 0px);--safe-area-inset-left: env(safe-area-inset-left, 0px);--mobile-breakpoint: 767px;--tablet-breakpoint: 1023px}html.dark{--color-bg-primary: #1a1a2e;--color-bg-secondary: #16213e;--color-bg-tertiary: #0f0f23;--color-bg-input: #16213e;--color-bg-hover: #232342;--color-bg-card: #16213e;--color-text-primary: #ffffff;--color-text-secondary: rgba(255, 255, 255, .7);--color-text-muted: rgba(255, 255, 255, .4);--color-text-inverse: #1a1a2e;--color-border: rgba(255, 255, 255, .1);--color-border-light: rgba(255, 255, 255, .05);--color-border-focus: #4a9eff;--color-accent: #4a9eff;--color-accent-hover: #3a8eef;--color-accent-light: rgba(74, 158, 255, .2);--color-success: #28a745;--color-success-hover: #218838;--color-warning: #ffc107;--color-warning-bg: rgba(255, 193, 7, .2);--color-warning-text: #ffc107;--color-danger: #ff6b6b;--color-danger-hover: #ff5252;--color-tag-bg: rgba(255, 193, 7, .2);--color-tag-text: #ffc107;--color-overlay: rgba(0, 0, 0, .7);--color-diff-old-bg: rgba(220, 53, 69, .2);--color-diff-old-text: #ff6b6b;--color-diff-new-bg: rgba(40, 167, 69, .2);--color-diff-new-text: #51cf66;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .2);--shadow-md: 0 4px 6px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .4)}*{box-sizing:border-box}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background-color:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.5;transition:background-color var(--transition-normal),color var(--transition-normal)}*:focus{outline:2px solid var(--color-accent);outline-offset:2px}*:focus:not(:focus-visible){outline:none}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--color-bg-tertiary)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-secondary)}.auth-modal{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1000;display:flex;align-items:center;justify-content:center}.auth-modal-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background-color:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.auth-modal-content{position:relative;background:var(--color-bg-primary, #ffffff);border-radius:12px;box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;width:90%;max-width:400px;max-height:90vh;overflow-y:auto;z-index:1001;animation:modalSlideIn .3s ease-out;color:var(--color-text-primary, #1a1a1a)}@keyframes modalSlideIn{0%{opacity:0;transform:translateY(-20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.auth-modal-close{position:absolute;top:16px;right:16px;background:none;border:none;font-size:28px;color:var(--color-text-secondary, #666);cursor:pointer;padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background-color .2s,color .2s;z-index:10}.auth-modal-close:hover{background-color:var(--color-bg-hover, #f0f0f0);color:var(--color-text-primary, #333)}.auth-modal-header{padding:32px 32px 24px;text-align:center}.auth-modal-header h2{margin:0;font-size:28px;font-weight:600;color:var(--color-text-primary, #1a1a1a)}.auth-modal-body{padding:0 32px 24px}.auth-provider-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:12px;padding:12px 16px;margin-bottom:12px;border:1px solid var(--color-border, #e0e0e0);border-radius:8px;background:var(--color-bg-primary, white);color:var(--color-text-primary, #1a1a1a);font-size:15px;font-weight:500;cursor:pointer;transition:all .2s}.auth-provider-btn:hover{background-color:var(--color-bg-hover, #f8f8f8);border-color:var(--color-border, #d0d0d0);transform:translateY(-1px);box-shadow:0 2px 4px #0000001a}.auth-provider-btn:active{transform:translateY(0)}.auth-provider-icon{flex-shrink:0}.auth-email-btn{border-color:var(--color-accent, #1a1a1a);background-color:var(--color-accent, #1a1a1a);color:var(--color-text-inverse, white)}.auth-email-btn:hover{background-color:var(--color-accent-hover, #333);border-color:var(--color-accent-hover, #333)}.auth-divider{display:flex;align-items:center;text-align:center;margin:24px 0;color:var(--color-text-secondary, #666);font-size:14px}.auth-divider:before,.auth-divider:after{content:"";flex:1;border-bottom:1px solid var(--color-border, #e0e0e0)}.auth-divider span{padding:0 16px}#auth-email-section{margin-top:8px}#auth-email-form{display:flex;flex-direction:column;gap:12px}#auth-email-form input,#auth-otp-form input{padding:12px 16px;border:1px solid var(--color-border, #e0e0e0);border-radius:8px;font-size:15px;background:var(--color-bg-input, white);color:var(--color-text-primary, #1a1a1a);transition:border-color .2s}#auth-email-form input:focus,#auth-otp-form input:focus{outline:none;border-color:var(--color-accent, #1a1a1a)}#auth-otp-form{display:flex;flex-direction:column;gap:12px}#auth-otp-form input{text-align:center;font-size:20px;letter-spacing:4px;font-weight:600}.auth-submit-btn{padding:12px 16px;background-color:var(--color-accent, #1a1a1a);color:var(--color-text-inverse, white);border:none;border-radius:8px;font-size:15px;font-weight:500;cursor:pointer;transition:background-color .2s;margin-top:8px}.auth-submit-btn:hover{background-color:var(--color-accent-hover, #333)}.auth-submit-btn:disabled{opacity:.6;cursor:not-allowed}.auth-back-btn{width:100%;padding:10px;margin-top:12px;background:none;border:none;color:var(--color-text-secondary, #666);font-size:14px;cursor:pointer;text-align:center;transition:color .2s}.auth-back-btn:hover{color:var(--color-text-primary, #1a1a1a)}.auth-resend-btn{width:100%;padding:10px;margin-top:12px;background:var(--color-text-secondary, #6c757d);border:none;border-radius:8px;color:var(--color-text-inverse, white);font-size:14px;font-weight:500;cursor:pointer;text-align:center;transition:background-color .2s}.auth-resend-btn:hover{background:var(--color-text-primary, #333)}.auth-modal-footer{padding:16px 0 0;text-align:center;font-size:14px;color:var(--color-text-secondary, #666)}.auth-modal-footer p{margin:8px 0}.auth-modal-footer a{color:var(--color-accent, #1a1a1a);text-decoration:underline;cursor:pointer}.auth-modal-footer a:hover{color:var(--color-accent-hover, #333)}.auth-modal-terms{padding:16px 32px 24px;text-align:center;font-size:12px;color:var(--color-text-muted, #999);border-top:1px solid var(--color-border, #f0f0f0)}.auth-modal-terms a{color:var(--color-accent, #1a1a1a);text-decoration:underline}.auth-modal-terms a:hover{color:var(--color-accent-hover, #333)}.auth-magic-link-sent{text-align:center;padding:20px}.auth-email-icon{font-size:48px;margin-bottom:20px}.auth-email-title{margin-bottom:12px;color:var(--color-text-primary, #333);font-size:20px;font-weight:600}.auth-email-text{color:var(--color-text-secondary, #666);margin-bottom:24px;line-height:1.5}.auth-email-address{color:var(--color-text-primary, #333);font-weight:600}.auth-email-instructions{color:var(--color-text-secondary, #666);font-size:14px;margin-bottom:24px}.auth-modal.sign-up-mode #auth-modal-title,.auth-modal.sign-up-mode #auth-sign-in-section{display:none}.auth-modal.sign-up-mode #auth-email-section,.auth-modal.sign-up-mode #auth-email-submit{display:block}@media (max-width: 480px){.auth-modal-content{width:100%;max-width:100%;border-radius:0;max-height:100vh}.auth-modal-header{padding:24px 24px 20px}.auth-modal-body{padding:0 24px 20px}.auth-modal-terms{padding:12px 24px 20px}}