:root{
  --page-bg:#0c111b;
  --panel-bg:#111a2a;
  --panel-bg-soft:#151f34;
  --panel-border:rgba(255,255,255,0.04);
  --fg:#e7ecf4;
  --fg-muted:#9ba7c0;
  --fg-subtle:#5f6a82;
  --accent-start:#22d3ee;
  --accent-mid:#0ea5e9;
  --accent-end:#2563eb;
  --accent-primary:#0ea5e9;
  --accent-danger:#ff6b6b;
  --accent-success:#34d399;
  --accent-warning:#fbbf24;
  --shadow-xl:0 30px 80px rgba(3,6,18,0.65);
  --shadow-md:0 16px 40px rgba(2,8,20,0.45);
  --radius-base:18px;
  --radius-pill:999px;
  --transition-fast:160ms ease;
  color-scheme:dark;
}

*{box-sizing:border-box;}
body{
  margin:0;
  min-height:100vh;
  background:var(--page-bg);
  color:var(--fg);
  font-family:"Inter","Segoe UI",system-ui,"Helvetica Neue",sans-serif;
  -webkit-font-smoothing:antialiased;
  overflow-y:auto;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}

/* Layout helpers */
.site-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 32px;
  background:rgba(12,17,27,0.95);
  border-bottom:1px solid var(--panel-border);
  position:sticky;
  top:0;
  z-index:1000;
  backdrop-filter:blur(12px);
  box-shadow:0 2px 8px rgba(0,0,0,0.1);
}
.site-brand .brand-link{
  font-weight:700;
  font-size:24px;
  letter-spacing:0.5px;
  background:linear-gradient(120deg,var(--accent-start),var(--accent-end));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.site-nav{display:flex;gap:16px;align-items:center;font-size:15px;color:var(--fg-muted)}
.site-nav a:hover{color:var(--fg)}
.site-nav .header-btn{
  min-width:100px;
  width:100px;
  justify-content:center;
}
.site-nav form{
  display:inline;
  margin:0;
}
.site-nav form .header-btn{
  min-width:100px;
  width:100px;
}
.main-content{max-width:1200px;margin:56px auto;padding:0 24px}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:600;
  font-size:15px;
  border:none;
  border-radius:var(--radius-pill);
  padding:10px 22px;
  cursor:pointer;
  transition:transform var(--transition-fast),opacity var(--transition-fast);
  text-decoration:none;
}
.btn:disabled{opacity:.6;cursor:not-allowed}
.btn-primary{
  background:linear-gradient(130deg,var(--accent-start),var(--accent-end));
  color:#fff;
  box-shadow:0 12px 25px rgba(34,211,238,0.25);
}
.btn-primary:hover{transform:translateY(-1px)}
.btn-ghost{
  background:rgba(255,255,255,0.08);
  color:var(--fg);
  border:1px solid rgba(255,255,255,0.08);
}
.btn-ghost.active,
.filter-btn.active{
  background:rgba(34,211,238,0.15);
  border-color:var(--accent-mid);
  color:var(--accent-mid);
  box-shadow:0 0 0 2px rgba(34,211,238,0.2);
}
.btn-outline{
  background:transparent;
  border:1px solid rgba(255,255,255,0.2);
  color:var(--fg);
}
.btn-danger{
  background:linear-gradient(130deg,#ff6b6b,#ff4b81);
  color:#fff;
}

/* Cards / panels */
.card{
  background:var(--panel-bg);
  border-radius:var(--radius-base);
  border:1px solid var(--panel-border);
  box-shadow:var(--shadow-md);
  padding:24px;
}
.card + .card{margin-top:24px}
.panel-title{
  font-size:20px;
  font-weight:600;
  margin-bottom:16px;
}

/* Forms */
label{
  display:block;
  font-size:14px;
  font-weight:500;
  margin-bottom:6px;
  color:var(--fg);
}
input[type="text"],
input[type="email"],
input[type="password"],
select,
textarea{
  width:100%;
  background:#0a1324;
  border:1px solid rgba(255,255,255,0.08);
  color:var(--fg);
  font-size:15px;
  padding:10px 14px;
  border-radius:14px;
  outline:none;
  transition:border var(--transition-fast),box-shadow var(--transition-fast);
}
input:focus,select:focus,textarea:focus{
  border-color:var(--accent-mid);
  box-shadow:0 0 0 2px rgba(37,99,235,0.25);
}
.form-row{display:flex;gap:16px;flex-wrap:wrap}
.form-row .field{flex:1;min-width:220px}
.form-actions{
  display:flex;
  justify-content:flex-end;
  gap:12px;
  margin-top:24px;
}

/* Modal */
.modal{
  position:fixed;
  inset:0;
  display:none;
  align-items:center;
  justify-content:center;
  background:rgba(3,6,18,0.75);
  z-index:2000;
  backdrop-filter:blur(18px);
}
.modal[aria-hidden="false"]{display:flex}
.modal-dialog{
  width:min(540px,90vw);
  border-radius:26px;
  padding:34px;
  background:radial-gradient(circle at top,#16273f,#0a121f);
  border:1px solid rgba(34,211,238,0.2);
  box-shadow:0 30px 70px rgba(0,0,0,0.65),0 0 50px rgba(34,211,238,0.35);
  position:relative;
}
.modal-title{font-size:24px;font-weight:600;margin-bottom:18px}
.modal-close{
  position:absolute;
  top:18px;
  right:18px;
  border:none;
  background:rgba(255,255,255,0.08);
  color:#fff;
  border-radius:999px;
  width:34px;
  height:34px;
  font-size:18px;
  cursor:pointer;
}

/* Tables */
table{
  width:100%;
  border-collapse:collapse;
  background:transparent;
}
th,td{
  padding:12px 16px;
  border-bottom:1px solid rgba(255,255,255,0.05);
}
th{
  text-align:left;
  font-size:13px;
  letter-spacing:0.05em;
  color:var(--fg-muted);
  text-transform:uppercase;
}
tr:hover{background:rgba(255,255,255,0.02)}

/* Cookie bar */
.cookie-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  background:#0e1627;
  border-top:1px solid var(--panel-border);
  padding:14px 20px;
  z-index:1050;
}
.cookie-inner{
  max-width:1280px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}
.cookie-text{color:var(--fg-muted);font-size:14px}

/* Dropdown */
.dropdown{position:relative;display:inline-block}
.dropdown-menu{
  display:none;
  position:absolute;
  top:calc(100% + 6px);
  right:0;
  background:var(--panel-bg-soft);
  border:1px solid var(--panel-border);
  border-radius:16px;
  box-shadow:var(--shadow-md);
  min-width:180px;
  overflow:hidden;
  z-index:1200;
}
.dropdown:hover .dropdown-menu{display:block}
.dropdown-item{
  display:block;
  padding:12px 18px;
  font-size:14px;
  color:var(--fg);
}
.dropdown-item:hover{background:rgba(255,255,255,0.05)}

@media (max-width:768px){
  .site-header{flex-direction:column;gap:12px;padding:16px 20px}
  .site-nav{flex-wrap:wrap;justify-content:center}
  .card{padding:20px}
  .modal-dialog{padding:26px}
}

/* Auth pages */
.auth-wrapper{
  min-height:calc(100vh - 120px);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:40px 16px;
}
.auth-card{
  width:100%;
  max-width:420px;
  background:var(--panel-bg);
  border-radius:24px;
  border:1px solid var(--panel-border);
  box-shadow:var(--shadow-xl);
  padding:32px;
}
.auth-card h2{
  margin-top:0;
  margin-bottom:12px;
  font-size:28px;
  font-weight:600;
  color:var(--fg);
}
.auth-card p.description{
  color:var(--fg-muted);
  font-size:14px;
  line-height:1.6;
  margin-bottom:20px;
}
.auth-message{
  border-radius:12px;
  padding:12px;
  margin-bottom:16px;
  font-size:14px;
}
.auth-message.success{
  background:#0f2b23;
  border:1px solid #1f6f4e;
  color:#7fe1ba;
}
.auth-message.error{
  background:#341219;
  border:1px solid #6a1b1b;
  color:#ff9f9f;
}
.auth-footer{
  opacity:.65;
  font-size:12px;
  margin-top:16px;
  text-align:center;
}
.password-strength{
  width:100%;
  height:4px;
  background:var(--panel-bg-soft);
  border-radius:2px;
  margin-top:8px;
  overflow:hidden;
  position:relative;
}
.password-strength-fill{
  height:100%;
  width:0%;
  transition:width 0.3s ease,background 0.3s ease;
  border-radius:2px;
}
.password-strength.weak .password-strength-fill{
  background:#ff4444;
  width:25%;
}
.password-strength.medium .password-strength-fill{
  background:#ffaa00;
  width:50%;
}
.password-strength.strong .password-strength-fill{
  background:#00c8b4;
  width:100%;
}
.auth-card form label{
  display:block;
  font-size:14px;
  font-weight:500;
  color:var(--fg);
  margin-bottom:10px;
}
.auth-card form label input{
  margin-top:8px;
}
.auth-link{
  color:#00c8b4;
  font-size:14px;
  text-decoration:underline;
  cursor:pointer;
}

/* App shell for dashboards */
.app-shell{
  display:flex;
  gap:24px;
  padding:32px;
  align-items:flex-start;
  min-height:calc(100vh - 80px);
  overflow:visible;
}
.app-shell .sidebar{
  width:240px;
  flex-shrink:0;
  position:sticky;
  top:80px;
  align-self:flex-start;
  background:var(--panel-bg-soft);
  border:1px solid var(--panel-border);
  border-radius:24px;
  padding:24px 20px;
  box-shadow:var(--shadow-md);
  max-height:calc(100vh - 100px);
  overflow-y:auto;
  overflow-x:hidden;
  transition:width var(--transition-fast),padding var(--transition-fast),opacity var(--transition-fast);
}
.app-shell .sidebar::-webkit-scrollbar{
  width:6px;
}
.app-shell .sidebar::-webkit-scrollbar-track{
  background:transparent;
}
.app-shell .sidebar::-webkit-scrollbar-thumb{
  background:rgba(255,255,255,0.1);
  border-radius:3px;
}
.app-shell .sidebar::-webkit-scrollbar-thumb:hover{
  background:rgba(255,255,255,0.2);
}
.app-shell .sidebar.collapsed{
  width:0;
  padding:0;
  margin:0;
  opacity:0;
  pointer-events:none;
  border:none;
}
.sidebar-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:16px;
}
.sidebar-title{
  font-size:13px;
  font-weight:600;
  letter-spacing:0.1em;
  color:var(--fg-subtle);
  text-transform:uppercase;
  flex:1;
}
.sidebar-toggle{
  background:transparent;
  border:none;
  color:var(--fg-muted);
  font-size:18px;
  cursor:pointer;
  padding:4px 8px;
  border-radius:8px;
  transition:background var(--transition-fast),color var(--transition-fast);
  line-height:1;
}
.sidebar-toggle:hover{
  background:rgba(255,255,255,0.08);
  color:var(--fg);
}
.sidebar.collapsed + .workspace{
  margin-left:0;
}
.sidebar-restore-btn{
  position:fixed;
  left:16px;
  top:50%;
  transform:translateY(-50%);
  background:var(--panel-bg-soft);
  border:1px solid var(--panel-border);
  border-radius:0 12px 12px 0;
  padding:12px 8px;
  color:var(--fg);
  font-size:18px;
  cursor:pointer;
  z-index:1500;
  box-shadow:var(--shadow-md);
  transition:opacity var(--transition-fast),transform var(--transition-fast);
  opacity:0;
  pointer-events:none;
  display:flex;
  align-items:center;
  justify-content:center;
  min-width:40px;
}
.sidebar-restore-btn:hover{
  background:var(--panel-bg);
  transform:translateY(-50%) translateX(4px);
}
.app-shell.sidebar-collapsed .sidebar-restore-btn{
  opacity:1;
  pointer-events:auto;
}
.sidebar .btn{
  width:100%;
  justify-content:flex-start;
  margin-bottom:10px;
}
.sidebar .btn-active,
.sidebar .btn:hover{
  background:linear-gradient(120deg,var(--accent-mid),var(--accent-end));
  color:#fff;
  box-shadow:0 10px 25px rgba(14,165,233,0.25);
}
.submenu{
  margin:8px 0 0 6px;
  padding-left:10px;
  border-left:2px solid rgba(255,255,255,0.08);
}
.submenu .btn{
  background:rgba(255,255,255,0.04);
  font-size:13px;
  padding:8px 16px;
}
.workspace{
  flex:1;
  min-width:0;
  min-height:70vh;
  display:flex;
  flex-direction:column;
  gap:24px;
  width:100%;
  overflow-y:auto;
  overflow-x:hidden;
}
.workspace .panel{
  background:var(--panel-bg);
  border-radius:24px;
  border:1px solid var(--panel-border);
  padding:32px;
  box-shadow:var(--shadow-xl);
  width:100%;
  margin:0;
  overflow-x:auto;
  overflow-y:auto;
  height:auto;
  max-height:none;
}
.workspace #content{
  overflow-y:auto;
  overflow-x:auto;
  max-height:none;
  height:auto;
}
.btn-sm{
  padding:6px 16px;
  font-size:13px;
}

/* Homepage / Dashboard specific styles */
.homepage-welcome{
  margin-bottom:32px;
}
.homepage-welcome h1{
  margin:0 0 12px 0;
  color:var(--fg);
  font-size:32px;
  font-weight:600;
}
.homepage-stats{
  display:flex;
  gap:20px;
  flex-wrap:wrap;
  margin-top:16px;
  font-size:14px;
  color:var(--fg-muted);
}
.homepage-stats-item{
  display:flex;
  align-items:center;
  gap:8px;
}
.homepage-stats-label{
  color:var(--accent-start);
}
.homepage-stats-value{
  color:var(--fg);
  margin-left:4px;
}
.homepage-cards-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:20px;
  margin-bottom:32px;
}
.homepage-card{
  background:var(--panel-bg-soft);
  border:1px solid var(--panel-border);
  border-radius:var(--radius-base);
  padding:20px;
}
.homepage-card-title{
  margin:0 0 12px 0;
  color:var(--fg-muted);
  font-size:14px;
  font-weight:500;
}
.homepage-card-value{
  color:var(--fg);
  font-size:28px;
  font-weight:700;
  line-height:1.2;
}
.homepage-activity-list{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.homepage-activity-item{
  padding:12px;
  background:var(--panel-bg-soft);
  border:1px solid var(--panel-border);
  border-radius:12px;
}
.homepage-activity-main{
  color:var(--fg);
  font-size:14px;
  margin-bottom:6px;
}
.homepage-activity-meta{
  color:var(--fg-subtle);
  font-size:12px;
}

@media (max-width:1024px){
  .app-shell{
    flex-direction:column;
    padding:24px 16px 80px;
    gap:16px;
  }
  .app-shell .sidebar{
    width:100% !important;
    position:relative;
    top:0;
    max-height:none;
    min-height:auto;
    display:flex;
    flex-wrap:wrap;
    gap:10px;
  }
  .sidebar.collapsed{
    display:none;
  }
  .sidebar .btn{
    flex:1 1 calc(50% - 10px);
    margin-bottom:0;
  }
  .workspace{
    width:100%;
  }
  .workspace .panel{
    padding:24px;
  }
  .homepage-cards-grid{
    grid-template-columns:1fr;
  }
}

/* Tabs */
.tab-btn{
  padding:12px 24px;
  background:transparent;
  border:none;
  border-bottom:2px solid transparent;
  color:var(--fg-muted);
  cursor:pointer;
  font-weight:400;
  transition:all 0.2s;
  font-size:14px;
}
.tab-btn:hover{
  color:var(--fg);
}
.tab-btn.active{
  color:var(--accent-primary);
  border-bottom-color:var(--accent-primary);
  font-weight:600;
}
.tab-content{
  display:none;
}
.tab-content.active{
  display:block;
}