:root{--dh-sidebar-width: 220px;--dh-sidebar-collapsed: 70px;--dh-header-height: 70px;--dh-primary: #ff5722;--dh-secondary: #ff7043;--dh-accent: #ff8a65;--dh-success: #10b981;--dh-warning: #f59e0b;--dh-danger: #ef4444;--dh-muted: #6b7280;--dh-bg-gradient: #f8f9fa;--dh-sidebar-bg: #ffffff;--dh-card-bg: #ffffff;--dh-text: #1f2937;--dh-text-light: #ffffff;--dh-border: #e5e7eb;--dh-hover: #f9fafb;--primary-color: #ff5722;--transition-fast: all .3s ease-in-out}body.dark{--dh-bg-gradient: #1a1a1a;--dh-sidebar-bg: #2d2d2d;--dh-card-bg: #2d2d2d;--dh-text: #ffffff;--dh-border: #404040;--dh-hover: #404040}*{box-sizing:border-box;margin:0;padding:0;font-family:Poppins,system-ui,sans-serif}body{font-family:Poppins,system-ui,sans-serif;background:var(--dh-bg-gradient);color:var(--dh-text);transition:var(--transition-fast);overflow-x:hidden;min-height:100vh}input,button,select,textarea,table,th,td{font-family:Poppins,system-ui,sans-serif!important}.layout{display:flex;min-height:100vh;width:100vw;overflow-x:hidden}.sidebar{position:fixed;top:0;left:0;width:var(--dh-sidebar-width);height:100vh;background:var(--dh-sidebar-bg);color:var(--dh-text);padding:1rem;z-index:1030;overflow-y:auto;border-right:1px solid var(--dh-border)}.main-content{margin-left:var(--dh-sidebar-width);width:calc(100vw - var(--dh-sidebar-width));min-height:100vh;background:var(--dh-bg-gradient);overflow-x:hidden}.content{padding:1.5rem;width:100%;max-width:100%;overflow-x:hidden;box-sizing:border-box}.logo{text-align:left;font-size:1.1rem;font-weight:700;color:var(--dh-primary);margin-bottom:2rem;display:flex;align-items:center;gap:.5rem}.nav-link{display:flex;align-items:center;gap:.6rem;color:var(--dh-text);text-decoration:none;padding:.75rem;border-radius:8px;margin-bottom:.5rem;transition:var(--transition-fast);font-size:.9rem}.nav-link:hover,.nav-link.active{background:var(--dh-primary);color:#fff}.nav-link i{font-size:1rem;width:18px}.theme-toggle-container{margin-top:auto;padding-top:1rem;border-top:1px solid var(--dh-border)}.theme-toggle{display:flex;align-items:center;justify-content:space-between;padding:.6rem .75rem;margin-bottom:.5rem;color:var(--dh-text);font-size:.85rem}.theme-switch{position:relative;width:50px;height:24px;background:var(--dh-border);border-radius:12px;cursor:pointer;transition:background .3s}.theme-switch.active{background:var(--dh-primary)}.theme-switch:after{content:"";position:absolute;top:2px;left:2px;width:20px;height:20px;background:white;border-radius:50%;transition:transform .3s}.theme-switch.active:after{transform:translate(26px)}.card{background:var(--dh-card-bg);border-radius:12px;box-shadow:0 2px 8px #0000001a;border:1px solid var(--dh-border);padding:1.5rem;margin-bottom:1.5rem;transition:transform .2s,box-shadow .2s;width:100%;max-width:100%;box-sizing:border-box;overflow-x:auto;word-wrap:break-word}.card:hover{transform:translateY(-2px);box-shadow:0 4px 12px #00000026}.card-title{font-size:1.25rem;font-weight:600;margin-bottom:1rem;color:var(--dh-text)}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-bottom:2rem}@media (max-width: 992px){.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}}.stat-card{background:var(--dh-card-bg);border-radius:12px;padding:1.5rem;text-align:center;box-shadow:0 2px 8px #0000001a;transition:transform .2s;border:1px solid var(--dh-border)}.stat-card:hover{transform:translateY(-4px)}.stat-card i{font-size:2.5rem;color:var(--dh-primary);margin-bottom:.5rem}.stat-value{font-size:2rem;font-weight:700;color:var(--dh-text);margin-bottom:.25rem}.stat-label{color:var(--dh-muted);font-size:.9rem}.btn{padding:.75rem 1.5rem;border-radius:8px;border:none;font-weight:500;cursor:pointer;transition:var(--transition-fast);text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;text-align:center}.btn-primary{background:var(--dh-primary);color:#fff}.btn-primary:hover{background:#e64a19;transform:translateY(-1px)}.btn-success{background:var(--dh-success);color:#fff}.btn-success:hover{background:#0d9668}.btn-danger{background:var(--dh-danger);color:#fff}.btn-danger:hover{background:#dc2626}.btn-outline{background:transparent;border:2px solid var(--dh-primary);color:var(--dh-primary)}.btn-outline:hover{background:var(--dh-primary);color:#fff}.btn-sm{padding:.5rem 1rem;font-size:.875rem}.table-responsive{overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%}.table{width:100%;border-collapse:collapse;background:var(--dh-card-bg);border-radius:12px;overflow:hidden;box-shadow:0 2px 8px #0000001a}.table th,.table td{padding:.75rem .5rem;text-align:left;border-bottom:1px solid var(--dh-border);font-size:.85rem}.table th{background:#f8f9fa;font-weight:600;color:var(--dh-text)}body.dark .table th{background:#404040}.table tbody tr:hover{background:rgba(255,87,34,.1)}.form-group{margin-bottom:1.5rem}.form-label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--dh-text)}.form-control{width:100%;max-width:100%;padding:.75rem;border:2px solid var(--dh-border);border-radius:8px;font-size:1rem;transition:border-color .2s;background:var(--dh-card-bg);color:var(--dh-text);box-sizing:border-box}.form-control:focus{outline:none;border-color:var(--dh-primary)}.badge{padding:.25rem .75rem;border-radius:12px;font-size:.75rem;font-weight:600;text-transform:uppercase}.badge-success{background:rgba(16,185,129,.2);color:var(--dh-success)}.badge-warning{background:rgba(245,158,11,.2);color:var(--dh-warning)}.badge-danger{background:rgba(239,68,68,.2);color:var(--dh-danger)}.text-center{text-align:center}.text-right{text-align:right}.text-muted{color:var(--dh-muted)}.text-primary{color:var(--dh-primary)}.text-success{color:var(--dh-success)}.text-danger{color:var(--dh-danger)}.d-flex{display:flex}.justify-content-between{justify-content:space-between}.justify-content-center{justify-content:center}.align-items-center{align-items:center}.gap-2{gap:.5rem}.gap-3{gap:1rem}.mb-0{margin-bottom:0}.mb-1{margin-bottom:.25rem}.mb-2{margin-bottom:.5rem}.mb-3{margin-bottom:1rem}.mb-4{margin-bottom:1.5rem}.mt-3{margin-top:1rem}.mt-4{margin-top:1.5rem}.p-3{padding:1rem}.p-4{padding:1.5rem}.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:60px;background:var(--dh-card-bg);border-bottom:1px solid var(--dh-border);z-index:1040;padding:0 1rem;align-items:center;justify-content:space-between}.mobile-menu-btn{background:none;border:none;font-size:1.5rem;color:var(--dh-text);cursor:pointer}.mobile-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.5);z-index:1035}.mobile-overlay.show{display:block}@media (min-width: 1400px){.stats-grid{grid-template-columns:repeat(4,1fr)}.content{padding:2rem}}@media (min-width: 1200px) and (max-width: 1399px){.stats-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 1199px) and (min-width: 769px){.stats-grid{grid-template-columns:repeat(2,1fr)}.table{font-size:.8rem;min-width:650px}.table th,.table td{padding:.6rem .4rem}.content{padding:1rem}}.task-detail-container{display:flex;flex-direction:column;gap:1rem;width:100%}.task-detail-main{flex:1;min-width:0}.task-detail-sidebar{width:100%}@media (min-width: 1200px){.task-detail-container{display:grid;grid-template-columns:1fr 300px;gap:1.5rem}.task-detail-sidebar{width:auto}}@media (max-width: 768px){.mobile-header{display:flex}.sidebar{transform:translate(-100%);transition:transform .3s;z-index:1036;width:280px;top:0}.sidebar.show{transform:translate(0)}.main-content{margin-left:0;padding-top:60px}.content{padding:1rem}.stats-grid{grid-template-columns:1fr;gap:1rem}.stat-card{padding:1rem}.stat-card i{font-size:2rem}.stat-value{font-size:1.5rem}.card{padding:1rem;margin-bottom:1rem}.card-title{font-size:1.1rem}.table{font-size:.75rem;min-width:600px}.table th,.table td{padding:.5rem .3rem}.btn{padding:.5rem 1rem;font-size:.875rem}.form-control{padding:.6rem}}@media (max-width: 480px){.sidebar{width:100vw}.content{padding:.75rem}.stats-grid{gap:.75rem}.stat-card,.card{padding:.75rem}.table{min-width:550px;font-size:.7rem}.table th,.table td{padding:.4rem .25rem}}@media (max-width: 768px) and (orientation: landscape){.mobile-header{height:50px}.main-content{padding-top:50px}.content{padding:.75rem}}.spinner{display:inline-block;position:relative}.spinner-sm{width:30px;height:30px}.spinner-md{width:50px;height:50px}.spinner-lg{width:70px;height:70px}.spinner-ring{position:absolute;border:3px solid transparent;border-top-color:var(--dh-primary);border-radius:50%;animation:spin 1.2s cubic-bezier(.5,0,.5,1) infinite}.spinner-sm .spinner-ring{width:30px;height:30px;border-width:2px}.spinner-md .spinner-ring{width:50px;height:50px;border-width:3px}.spinner-lg .spinner-ring{width:70px;height:70px;border-width:4px}.spinner-ring:nth-child(1){animation-delay:-.45s}.spinner-ring:nth-child(2){animation-delay:-.3s;border-top-color:var(--dh-secondary)}.spinner-ring:nth-child(3){animation-delay:-.15s;border-top-color:var(--dh-accent)}.spinner-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(255,255,255,.8);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:9999}body.dark .spinner-overlay{background:rgba(0,0,0,.8)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease-out}@keyframes slideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}