.webrtc-container{width:100%;height:100%;padding:var(--spacing-md);box-sizing:border-box;display:flex;flex-direction:column}.webrtc-videos{display:flex;flex-direction:column;gap:var(--spacing-md);width:100%;height:100%;flex:1}.webrtc-video-box{position:relative;background:var(--color-gray-900);border-radius:var(--border-radius-lg);overflow:hidden;width:100%;flex:1 1 50%;min-height:0;aspect-ratio:16 / 9}.webrtc-local,.webrtc-remote{flex:1 1 50%}.webrtc-video{width:100%;height:100%;object-fit:cover;display:block;background:var(--color-gray-900)}.webrtc-video-label{position:absolute;top:var(--spacing-sm);left:var(--spacing-sm);background:#000000bf;color:var(--color-white);padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--border-radius-md);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);z-index:10;pointer-events:none}.webrtc-status{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#000000d9;color:var(--color-white);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--border-radius-md);font-size:var(--font-size-base);z-index:10;text-align:center;pointer-events:none}.webrtc-error{padding:var(--spacing-xl);background:#ffebee;color:#c62828;border-radius:var(--border-radius-lg);text-align:center;margin:var(--spacing-md)}.webrtc-ended{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl) var(--spacing-xl);background:#e8f5e9;border-radius:var(--border-radius-lg);text-align:center;margin:var(--spacing-md)}.webrtc-ended-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.webrtc-ended p{font-size:var(--font-size-lg);color:#2e7d32;font-weight:var(--font-weight-semibold);margin:0}@media (min-width: 769px){.webrtc-container{padding:var(--spacing-lg)}.webrtc-videos{flex-direction:row;gap:var(--spacing-lg)}.webrtc-video-box{flex:1 1 50%;min-height:400px;max-height:500px;aspect-ratio:16 / 9}.webrtc-local,.webrtc-remote{flex:1 1 50%}}@media (min-width: 481px) and (max-width: 768px){.webrtc-videos{gap:var(--spacing-md)}.webrtc-video-box{aspect-ratio:16 / 9}.webrtc-local,.webrtc-remote{flex:1 1 50%}}@media (max-width: 480px){.webrtc-container{padding:var(--spacing-sm)}.webrtc-videos{gap:var(--spacing-sm)}.webrtc-video-box{aspect-ratio:16 / 9;min-height:200px}.webrtc-local,.webrtc-remote{flex:1 1 50%}.webrtc-video-label{font-size:var(--font-size-xs);padding:3px var(--spacing-sm)}.webrtc-status{font-size:var(--font-size-sm);padding:var(--spacing-sm) var(--spacing-md)}}.visitor-view{min-height:100vh;min-height:100dvh;display:flex;align-items:flex-start;justify-content:center;padding:var(--spacing-lg);padding-top:var(--spacing-xl);background-color:var(--color-gray-50)}.visitor-container{background:var(--color-white);border-radius:var(--border-radius-lg);padding:var(--spacing-xl);max-width:600px;width:100%;text-align:center;box-shadow:var(--shadow-md);border:var(--border-width) solid var(--color-gray-200)}.visitor-container h1{margin-bottom:var(--spacing-lg);color:var(--color-primary);font-size:var(--font-size-2xl);font-weight:var(--font-weight-semibold)}.visitor-container p{margin-bottom:var(--spacing-lg);color:var(--color-gray-700);font-size:var(--font-size-base)}.btn-primary{background-color:var(--color-primary);color:var(--color-white);border:none;padding:var(--spacing-md) 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768px){.visitor-view{padding:var(--spacing-md)}.visitor-container{padding:var(--spacing-lg)}}.interphone-container{min-height:100vh;background:var(--color-gray-50);padding:var(--spacing-xl);display:flex;flex-direction:column;align-items:center;justify-content:center;font-family:var(--font-family)}.interphone-header{text-align:center;color:var(--color-primary);margin-bottom:var(--spacing-xl)}.header-logo{max-width:100px;max-height:100px;margin-bottom:var(--spacing-md);border-radius:var(--border-radius-md);box-shadow:var(--shadow-md)}.header-emoji{font-size:4rem;margin-bottom:var(--spacing-sm)}.interphone-title{font-size:var(--font-size-3xl);font-weight:var(--font-weight-semibold);margin:0;color:var(--color-primary)}.interphone-subtitle{font-size:var(--font-size-lg);margin:var(--spacing-sm) 0 0 0;color:var(--color-gray-600)}.warning-box{background:var(--color-white);border-radius:var(--border-radius-lg);padding:var(--spacing-lg);margin:var(--spacing-lg) 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ease;min-width:200px;min-height:44px}.btn-open-gate:hover:not(:disabled){background-color:#229954}.btn-open-gate:disabled{opacity:.5;cursor:not-allowed}.btn-end-call{background-color:var(--color-error);color:var(--color-white);border:none;padding:var(--spacing-md) var(--spacing-xl);border-radius:var(--border-radius-md);font-size:var(--font-size-base);font-weight:var(--font-weight-medium);cursor:pointer;transition:background-color .2s ease;min-width:200px;min-height:44px}.btn-end-call:hover{background-color:#c0392b}.iot-status{padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--border-radius-md);text-align:center;min-width:200px;font-size:var(--font-size-sm)}.iot-status.success{background-color:#e8f5e9;color:#2e7d32}.iot-status.error{background-color:#ffebee;color:#c62828}@media (min-width: 769px){.call-header{padding:var(--spacing-lg)}.call-header h1{font-size:var(--font-size-2xl)}.call-header p{font-size:var(--font-size-base)}.call-actions{padding:var(--spacing-xl);gap:var(--spacing-lg)}.btn-open-gate,.btn-end-call{min-width:250px;padding:var(--spacing-md) var(--spacing-2xl);font-size:var(--font-size-lg)}}@media (max-width: 768px){.call-header{padding:var(--spacing-sm)}.call-header h1{font-size:var(--font-size-lg)}.call-actions{padding:var(--spacing-md);gap:var(--spacing-sm)}.btn-open-gate,.btn-end-call{min-width:180px;padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--font-size-sm)}}.admin-login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl);background-color:var(--color-gray-50)}.admin-login-card{width:100%;max-width:420px}.admin-login-header{text-align:center;margin-bottom:var(--spacing-2xl)}.admin-login-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.admin-login-title{font-size:var(--font-size-3xl);font-weight:var(--font-weight-semibold);color:var(--color-primary);margin-bottom:var(--spacing-sm)}.admin-login-subtitle{font-size:var(--font-size-base);color:var(--color-gray-600);margin-bottom:0}.admin-login-form{margin-top:var(--spacing-xl)}@media (max-width: 768px){.admin-login-container{padding:var(--spacing-md)}.admin-login-title{font-size:var(--font-size-2xl)}}.user-management .section{margin-top:30px}.user-management table{margin-top:20px}.user-management .chip{font-size:.9rem}.user-management .modal{max-height:90%}.user-management .modal-content{padding:30px}.user-management .modal-footer{padding:20px 30px}.interphone-management .section{margin-top:30px}.interphone-management .card{margin-top:20px}.history-view .section{margin-top:30px}.history-view table{margin-top:20px}.history-view .chip{font-size:.9rem}.schedule-calendar .section{margin-top:30px}.schedule-calendar table{margin-top:20px}.schedule-calendar .modal{max-height:90%}.schedule-calendar .modal-content{padding:30px}.schedule-calendar .modal-footer{padding:20px 30px}.admin-dashboard-container{min-height:100vh;background-color:var(--color-gray-50)}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;color:var(--color-gray-600)}.tabs-container{margin-bottom:var(--spacing-xl);border-bottom:var(--border-width) solid var(--color-gray-200);overflow-x:auto}.tabs{display:flex;gap:var(--spacing-md);min-width:max-content}.tab{padding:var(--spacing-md) var(--spacing-lg);font-size:var(--font-size-base);font-weight:var(--font-weight-medium);color:var(--color-gray-600);background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;transition:all .2s ease;margin-bottom:-1px;white-space:nowrap}.tab:hover{color:var(--color-primary)}.tab.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.section{margin-top:var(--spacing-xl)}.section-title{font-size:var(--font-size-2xl);font-weight:var(--font-weight-semibold);color:var(--color-primary);margin-bottom:var(--spacing-xl)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.stat-card{transition:box-shadow .2s 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768px){.stats-grid,.dashboard-tables{grid-template-columns:1fr}.tabs{gap:var(--spacing-sm)}.tab{padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-sm)}}*{margin:0;padding:0;box-sizing:border-box}:root{--color-primary: #2c3e50;--color-primary-light: #34495e;--color-primary-dark: #1a252f;--color-secondary: #3498db;--color-success: #27ae60;--color-warning: #f39c12;--color-error: #e74c3c;--color-white: #ffffff;--color-gray-50: #fafafa;--color-gray-100: #f5f5f5;--color-gray-200: #eeeeee;--color-gray-300: #e0e0e0;--color-gray-400: #bdbdbd;--color-gray-500: #9e9e9e;--color-gray-600: #757575;--color-gray-700: #616161;--color-gray-800: #424242;--color-gray-900: #212121;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--border-radius-sm: 4px;--border-radius-md: 8px;--border-radius-lg: 12px;--border-width: 1px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 2px 4px rgba(0, 0, 0, .1);--shadow-lg: 0 4px 8px rgba(0, 0, 0, .12);--shadow-xl: 0 8px 16px rgba(0, 0, 0, .15);--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", Arial, sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-size-4xl: 2.25rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:var(--line-height-normal);color:var(--color-gray-900);background-color:var(--color-gray-50);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:var(--font-weight-semibold);line-height:var(--line-height-tight);color:var(--color-gray-900);margin-bottom:var(--spacing-md)}h1{font-size:var(--font-size-4xl)}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}h5{font-size:var(--font-size-lg)}h6{font-size:var(--font-size-base)}p{margin-bottom:var(--spacing-md);color:var(--color-gray-700)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--font-size-base);font-weight:var(--font-weight-medium);line-height:1.5;text-align:center;text-decoration:none;border:var(--border-width) solid transparent;border-radius:var(--border-radius-md);cursor:pointer;transition:all .2s ease;background-color:transparent;min-height:44px}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background-color:var(--color-primary);color:var(--color-white);border-color:var(--color-primary)}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-light);border-color:var(--color-primary-light)}.btn-secondary{background-color:var(--color-secondary);color:var(--color-white);border-color:var(--color-secondary)}.btn-secondary:hover:not(:disabled){background-color:#2980b9;border-color:#2980b9}.btn-success{background-color:var(--color-success);color:var(--color-white);border-color:var(--color-success)}.btn-success:hover:not(:disabled){background-color:#229954;border-color:#229954}.btn-error{background-color:var(--color-error);color:var(--color-white);border-color:var(--color-error)}.btn-error:hover:not(:disabled){background-color:#c0392b;border-color:#c0392b}.btn-outline{background-color:transparent;color:var(--color-primary);border-color:var(--color-primary)}.btn-outline:hover:not(:disabled){background-color:var(--color-primary);color:var(--color-white)}.btn-large{padding:var(--spacing-md) var(--spacing-xl);font-size:var(--font-size-lg);min-height:52px}.btn-small{padding:var(--spacing-xs) var(--spacing-md);font-size:var(--font-size-sm);min-height:36px}.form-group{margin-bottom:var(--spacing-lg)}.form-label{display:block;font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-gray-700);margin-bottom:var(--spacing-xs)}.form-input{width:100%;padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-base);line-height:var(--line-height-normal);color:var(--color-gray-900);background-color:var(--color-white);border:var(--border-width) solid var(--color-gray-300);border-radius:var(--border-radius-md);transition:border-color .2s ease,box-shadow .2s ease;min-height:44px}.form-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2c3e501a}.form-input:disabled{background-color:var(--color-gray-100);cursor:not-allowed}.form-input::placeholder{color:var(--color-gray-400)}.card{background-color:var(--color-white);border:var(--border-width) solid var(--color-gray-200);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-sm);overflow:hidden}.card-header{padding:var(--spacing-lg);border-bottom:var(--border-width) solid var(--color-gray-200)}.card-body{padding:var(--spacing-lg)}.card-footer{padding:var(--spacing-lg);border-top:var(--border-width) solid var(--color-gray-200);background-color:var(--color-gray-50)}.alert{padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--border-radius-md);border-left:4px solid;margin-bottom:var(--spacing-lg)}.alert-info{background-color:#e3f2fd;border-color:var(--color-secondary);color:#1565c0}.alert-success{background-color:#e8f5e9;border-color:var(--color-success);color:#2e7d32}.alert-warning{background-color:#fff3e0;border-color:var(--color-warning);color:#e65100}.alert-error{background-color:#ffebee;border-color:var(--color-error);color:#c62828}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.container-sm{max-width:640px}.container-md{max-width:768px}.container-lg{max-width:1024px}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.mt-0{margin-top:0}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mt-xl{margin-top:var(--spacing-xl)}.mb-0{margin-bottom:0}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.mb-xl{margin-bottom:var(--spacing-xl)}.navbar{background-color:var(--color-white);border-bottom:var(--border-width) solid var(--color-gray-200);box-shadow:var(--shadow-sm);padding:var(--spacing-md) 0}.navbar-content{display:flex;align-items:center;justify-content:space-between}.navbar-brand{font-size:var(--font-size-xl);font-weight:var(--font-weight-semibold);color:var(--color-primary);text-decoration:none;display:flex;align-items:center;gap:var(--spacing-sm)}.navbar-menu{display:flex;align-items:center;gap:var(--spacing-lg);list-style:none}.navbar-link{color:var(--color-gray-700);text-decoration:none;font-weight:var(--font-weight-medium);transition:color .2s ease}.navbar-link:hover{color:var(--color-primary)}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:var(--spacing-md);text-align:left;border-bottom:var(--border-width) solid var(--color-gray-200)}.table th{font-weight:var(--font-weight-semibold);color:var(--color-gray-900);background-color:var(--color-gray-50)}.table tbody tr:hover{background-color:var(--color-gray-50)}@media (max-width: 768px){.container{padding:0 var(--spacing-md)}h1{font-size:var(--font-size-3xl)}h2{font-size:var(--font-size-2xl)}h3{font-size:var(--font-size-xl)}}