/* ================================================
   Instant Mail API — 科幻绿 · 二次元主题
   响应式设计：移动端 + PC端
   ================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --g1: #00ff88;
  --g2: #00cc6a;
  --g3: #0a5c36;
  --g4: #062e1c;
  --g5: #0d4a2e;
  --bg: #f0faf4;
  --bg2: #e4f5eb;
  --card: rgba(255,255,255,.88);
  --card2: #ffffff;
  --text: #0b3d22;
  --text2: #1a6b42;
  --text3: #3a9968;
  --border: rgba(0,255,136,.25);
  --glow: 0 0 20px rgba(0,255,136,.3);
  --glow2: 0 0 40px rgba(0,255,136,.15);
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(10,60,34,.08);
  --shadow-lg: 0 8px 40px rgba(10,60,34,.12);
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  --sidebar-w: 260px;
  --nav-h: 60px;
  --transition: .25s cubic-bezier(.4,0,.2,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:14px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;overflow-x:hidden}
a{color:var(--g2);text-decoration:none}
a:hover{color:var(--g1)}
img{max-width:100%;height:auto}
button{cursor:pointer;font-family:inherit}
input,select,textarea{font-family:inherit}

/* ---------- Animated Background ---------- */
body::before{
  content:'';position:fixed;inset:0;z-index:-1;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(0,255,136,.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(0,204,106,.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(10,92,54,.03) 0%, transparent 70%),
    var(--bg);
}

/* floating particles */
body::after{
  content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    radial-gradient(2px 2px at 10% 20%, var(--g1) 50%, transparent 50%),
    radial-gradient(2px 2px at 30% 60%, var(--g2) 50%, transparent 50%),
    radial-gradient(2px 2px at 70% 30%, var(--g1) 50%, transparent 50%),
    radial-gradient(2px 2px at 90% 70%, var(--g2) 50%, transparent 50%),
    radial-gradient(1px 1px at 50% 10%, var(--g1) 50%, transparent 50%),
    radial-gradient(1px 1px at 15% 80%, var(--g2) 50%, transparent 50%),
    radial-gradient(1px 1px at 85% 50%, var(--g1) 50%, transparent 50%);
  animation: drift 20s ease-in-out infinite alternate;
}
@keyframes drift{
  0%{transform:translateY(0) translateX(0)}
  100%{transform:translateY(-30px) translateX(15px)}
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--bg2)}
::-webkit-scrollbar-thumb{background:var(--g2);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--g1)}

/* ================================================
   NAVBAR
   ================================================ */
.navbar{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:1000;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(20px) saturate(180%);
  -webkit-backdrop-filter:blur(20px) saturate(180%);
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 20px rgba(0,255,136,.06);
}
.nav-container{
  max-width:100%;height:100%;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-brand{display:flex;align-items:center;gap:10px;font-size:1.15rem;font-weight:700;color:var(--g3)}
.nav-brand i{font-size:1.4rem;color:var(--g1);filter:drop-shadow(0 0 6px rgba(0,255,136,.5));animation:pulse-icon 2s ease-in-out infinite}
@keyframes pulse-icon{0%,100%{transform:scale(1)}50%{transform:scale(1.1)}}
.nav-status{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--text2)}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--g1);box-shadow:0 0 8px var(--g1);animation:blink 2s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.4}}

/* mobile menu toggle */
.nav-toggle{display:none;background:none;border:none;color:var(--g3);font-size:1.4rem;padding:8px}

/* ================================================
   LAYOUT
   ================================================ */
.main-container{
  display:flex;min-height:100vh;padding-top:var(--nav-h);
}

/* ---------- Sidebar ---------- */
.sidebar{
  position:fixed;top:var(--nav-h);left:0;bottom:0;width:var(--sidebar-w);
  background:rgba(255,255,255,.7);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-right:1px solid var(--border);
  overflow-y:auto;padding:20px 0;
  transition:transform var(--transition);
  z-index:900;
}
.sidebar-section{padding:0 16px;margin-bottom:24px}
.sidebar-title{
  font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;
  color:var(--text3);padding:0 12px;margin-bottom:10px;display:flex;align-items:center;gap:8px;
}
.sidebar-title i{color:var(--g1)}
.nav-list{list-style:none}
.nav-item{
  display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:var(--radius-sm);
  color:var(--text2);font-size:.92rem;font-weight:500;cursor:pointer;
  transition:all var(--transition);margin-bottom:2px;position:relative;
}
.nav-item i{width:20px;text-align:center;font-size:1rem}
.nav-item:hover{background:rgba(0,255,136,.08);color:var(--g3)}
.nav-item.active{
  background:linear-gradient(135deg,rgba(0,255,136,.12),rgba(0,204,106,.08));
  color:var(--g3);font-weight:600;
  box-shadow:inset 3px 0 0 var(--g1);
}
.nav-item.active i{color:var(--g1);filter:drop-shadow(0 0 4px rgba(0,255,136,.4))}
.badge{
  margin-left:auto;padding:2px 8px;border-radius:10px;font-size:.7rem;font-weight:700;
  background:linear-gradient(135deg,var(--g1),var(--g2));color:#fff;
  box-shadow:0 2px 8px rgba(0,255,136,.3);
}

/* sidebar tools */
.tools-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 4px}
.tool-btn{
  display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 8px;
  border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--card);
  color:var(--text2);font-size:.75rem;font-weight:500;
  transition:all var(--transition);
}
.tool-btn i{font-size:1.1rem;color:var(--g2)}
.tool-btn:hover{border-color:var(--g1);background:rgba(0,255,136,.06);transform:translateY(-1px);box-shadow:var(--glow)}

/* sidebar stats */
.stats-section{margin-top:auto;padding-bottom:20px}
.stats-mini{display:flex;flex-direction:column;gap:8px;padding:0 4px}
.stat-mini-item{
  display:flex;justify-content:space-between;align-items:center;
  padding:8px 12px;border-radius:var(--radius-sm);
  background:linear-gradient(135deg,rgba(0,255,136,.05),rgba(0,204,106,.03));
  border:1px solid rgba(0,255,136,.1);
}
.stat-mini-label{font-size:.78rem;color:var(--text3)}
.stat-mini-value{font-size:1.1rem;font-weight:700;color:var(--g3);font-family:var(--mono)}

/* ================================================
   CONTENT
   ================================================ */
.content{
  flex:1;margin-left:var(--sidebar-w);padding:28px 32px 40px;
  min-height:calc(100vh - var(--nav-h));
}

/* ---------- Section ---------- */
.content-section{display:none;animation:fadeUp .4s ease}
.content-section.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

.section-header{margin-bottom:28px}
.section-header h1{
  font-size:1.8rem;font-weight:800;color:var(--g4);
  display:flex;align-items:center;gap:10px;
}
.section-header h1 i{color:var(--g1);filter:drop-shadow(0 0 6px rgba(0,255,136,.4))}
.section-desc{color:var(--text3);font-size:.92rem;margin-top:4px}

/* ---------- Cards Grid ---------- */
.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-bottom:28px}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px 20px;display:flex;align-items:center;gap:16px;
  transition:all var(--transition);position:relative;overflow:hidden;
}
.card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--g1),var(--g2),var(--g1));
  background-size:200% 100%;animation:shimmer 3s linear infinite;
}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.card-icon{
  width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:1.4rem;flex-shrink:0;
}
.card-primary .card-icon{background:linear-gradient(135deg,rgba(0,255,136,.15),rgba(0,204,106,.1));color:var(--g1)}
.card-success .card-icon{background:linear-gradient(135deg,rgba(0,200,80,.15),rgba(0,180,70,.1));color:#00c850}
.card-warning .card-icon{background:linear-gradient(135deg,rgba(255,180,0,.15),rgba(255,160,0,.1));color:#ffa000}
.card-info .card-icon{background:linear-gradient(135deg,rgba(0,180,220,.15),rgba(0,160,200,.1));color:#00b4dc}
.card-label{font-size:.82rem;color:var(--text3);font-weight:500}
.card-value{font-size:1.6rem;font-weight:800;color:var(--g4);margin-top:2px;font-family:var(--mono)}

/* ---------- Panel ---------- */
.panel{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  margin-bottom:24px;overflow:hidden;box-shadow:var(--shadow);
  transition:box-shadow var(--transition);
}
.panel:hover{box-shadow:var(--shadow-lg)}
.panel-header{
  padding:16px 20px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  background:linear-gradient(135deg,rgba(0,255,136,.03),transparent);
}
.panel-header h2{font-size:1.05rem;font-weight:700;color:var(--g4);display:flex;align-items:center;gap:8px}
.panel-header h2 i{color:var(--g1)}
.panel-count{font-size:.82rem;color:var(--text3);font-weight:600}

/* ---------- Quick Actions ---------- */
.quick-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;padding:20px}
.action-btn{
  display:flex;align-items:center;gap:10px;padding:14px 18px;
  border:1px solid var(--border);border-radius:var(--radius-sm);
  background:var(--card2);font-size:.9rem;font-weight:600;color:var(--text2);
  transition:all var(--transition);
}
.action-btn i{font-size:1.2rem}
.action-btn:hover{transform:translateY(-2px);box-shadow:var(--glow)}
.action-primary:hover{border-color:var(--g1);color:var(--g3);background:rgba(0,255,136,.06)}
.action-success:hover{border-color:#00c850;color:#0a6b30;background:rgba(0,200,80,.06)}
.action-warning:hover{border-color:#ffa000;color:#7a5000;background:rgba(255,160,0,.06)}
.action-info:hover{border-color:#00b4dc;color:#005a6e;background:rgba(0,180,220,.06)}

/* ================================================
   TABLES
   ================================================ */
.table-responsive{overflow-x:auto}
.data-table{width:100%;border-collapse:collapse}
.data-table th{
  padding:12px 16px;text-align:left;font-size:.78rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.8px;color:var(--text3);
  background:linear-gradient(135deg,rgba(0,255,136,.04),rgba(0,204,106,.02));
  border-bottom:2px solid var(--border);
}
.data-table td{padding:12px 16px;border-bottom:1px solid rgba(0,255,136,.08);font-size:.9rem}
.data-table tr:hover td{background:rgba(0,255,136,.03)}
.data-table .text-center{text-align:center}
.data-table .text-muted{color:var(--text3)}

/* ================================================
   BUTTONS
   ================================================ */
.btn{
  display:inline-flex;align-items:center;gap:6px;padding:8px 16px;
  border-radius:var(--radius-sm);font-size:.85rem;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:all var(--transition);white-space:nowrap;
}
.btn-sm{padding:5px 10px;font-size:.78rem;border-radius:6px}
.btn-lg{padding:12px 24px;font-size:1rem}
.btn-primary{
  background:linear-gradient(135deg,var(--g1),var(--g2));color:#fff;
  border-color:var(--g2);box-shadow:0 2px 12px rgba(0,255,136,.25);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 20px rgba(0,255,136,.35);filter:brightness(1.05)}
.btn-info{background:rgba(0,180,220,.1);color:#00849a;border-color:rgba(0,180,220,.3)}
.btn-info:hover{background:rgba(0,180,220,.18);transform:translateY(-1px)}
.btn-warning{background:rgba(255,160,0,.1);color:#8a5800;border-color:rgba(255,160,0,.3)}
.btn-warning:hover{background:rgba(255,160,0,.18);transform:translateY(-1px)}
.btn-danger{background:rgba(220,50,50,.08);color:#b33;border-color:rgba(220,50,50,.25)}
.btn-danger:hover{background:rgba(220,50,50,.16);transform:translateY(-1px)}

/* ================================================
   FORMS
   ================================================ */
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;padding:20px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:.85rem;font-weight:600;color:var(--text2)}
.form-group .required{color:#e53935}
.form-group .text-muted{color:var(--text3);font-weight:400;font-size:.8rem}
.form-group input,.form-group select{
  padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:var(--card2);color:var(--text);font-size:.92rem;
  transition:all var(--transition);outline:none;
}
.form-group input:focus,.form-group select:focus{
  border-color:var(--g1);box-shadow:0 0 0 3px rgba(0,255,136,.12);
}
.form-hint{font-size:.78rem;color:var(--text3)}
.form-actions{display:flex;gap:12px;padding:0 20px 20px;flex-wrap:wrap}

/* ---------- Result Box ---------- */
.result-box{padding:20px;display:flex;flex-direction:column;gap:14px}
.result-item{display:flex;flex-direction:column;gap:4px}
.result-label{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text3)}
.result-value{font-size:.95rem;color:var(--text);font-weight:500;word-break:break-all}
.result-value.email{font-size:1.1rem;font-weight:700;color:var(--g3);font-family:var(--mono)}

/* ---------- Filter Bar ---------- */
.filter-bar{display:flex;align-items:center;gap:16px;padding:16px 20px;flex-wrap:wrap}
.filter-group{display:flex;align-items:center;gap:8px}
.filter-group label{font-size:.85rem;font-weight:600;color:var(--text2)}
.filter-group select{
  padding:6px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:var(--card2);color:var(--text);font-size:.85rem;outline:none;
}
.filter-group select:focus{border-color:var(--g1)}

/* ---------- Category Cards ---------- */
.category-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}

/* ---------- Status Cards ---------- */
.status-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-bottom:28px}
.status-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;text-align:center;transition:all var(--transition);
}
.status-card:hover{transform:translateY(-3px);box-shadow:var(--glow)}
.status-card-icon{font-size:2rem;color:var(--g1);margin-bottom:10px;filter:drop-shadow(0 0 8px rgba(0,255,136,.3))}
.status-card h3{font-size:1rem;font-weight:700;color:var(--g4);margin-bottom:6px}
.status-text{font-size:.88rem;font-weight:600;color:var(--text2)}
.status-card small{font-size:.75rem;color:var(--text3)}

/* ---------- System Info ---------- */
.system-info{padding:20px}
.info-item{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid rgba(0,255,136,.08)}
.info-item:last-child{border-bottom:none}
.info-label{font-size:.88rem;color:var(--text3);font-weight:500}
.info-value{font-size:.88rem;color:var(--text);font-weight:600}

/* ---------- Status Badge ---------- */
.status-badge{
  display:inline-flex;align-items:center;gap:4px;padding:3px 10px;
  border-radius:20px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.3px;
}
.status-badge.online{background:rgba(0,255,136,.12);color:var(--g3);border:1px solid rgba(0,255,136,.2)}
.status-badge.offline{background:rgba(220,50,50,.08);color:#b33;border:1px solid rgba(220,50,50,.15)}
.status-badge.experimental{background:rgba(255,160,0,.1);color:#8a5800;border:1px solid rgba(255,160,0,.2)}

/* ---------- Category Tag ---------- */
.category-tag{
  display:inline-flex;padding:3px 10px;border-radius:20px;font-size:.75rem;font-weight:600;
}
.category-tag.category-public{background:rgba(0,255,136,.1);color:var(--g3)}
.category-tag.category-hd{background:rgba(120,80,220,.1);color:#5a3aaa}
.category-tag.category-hot{background:rgba(220,50,50,.08);color:#b33}
.category-tag.category-google{background:rgba(255,160,0,.1);color:#8a5800}

/* ---------- Stats Display ---------- */
.stats-display{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;padding:20px}
.stat-box{
  text-align:center;padding:20px 16px;border-radius:var(--radius-sm);
  background:linear-gradient(135deg,rgba(0,255,136,.04),rgba(0,204,106,.02));
  border:1px solid rgba(0,255,136,.1);
}
.stat-box h4{font-size:.82rem;color:var(--text3);font-weight:600;margin-bottom:8px}
.stat-number{font-size:2rem;font-weight:800;color:var(--g3);font-family:var(--mono)}

/* ================================================
   MESSAGES
   ================================================ */
.message-card{
  padding:16px 20px;border-bottom:1px solid rgba(0,255,136,.08);
  cursor:pointer;transition:all var(--transition);
}
.message-card:hover{background:rgba(0,255,136,.04)}
.message-card:last-child{border-bottom:none}
.message-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.message-from{font-weight:600;color:var(--g4);font-size:.92rem}
.message-date{font-size:.78rem;color:var(--text3)}
.message-subject{font-weight:600;color:var(--text2);margin-bottom:4px;font-size:.88rem}
.message-preview{font-size:.82rem;color:var(--text3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ================================================
   DOCUMENTATION
   ================================================ */
.doc-section{padding:16px 20px}
.doc-item{
  padding:16px;border-radius:var(--radius-sm);margin-bottom:12px;
  border:1px solid rgba(0,255,136,.1);background:rgba(0,255,136,.02);
  transition:all var(--transition);
}
.doc-item:hover{border-color:var(--g1);box-shadow:0 2px 12px rgba(0,255,136,.08)}
.doc-item h3{font-size:.92rem;font-weight:700;color:var(--g4);margin-bottom:6px;display:flex;align-items:center;gap:8px}
.doc-item p{font-size:.85rem;color:var(--text3);margin-bottom:8px}
.doc-params{font-size:.82rem;color:var(--text2)}
.doc-params ul{margin:6px 0 0 16px}
.doc-params li{margin-bottom:4px}
.method-get{background:rgba(0,200,80,.12);color:#0a7a3a;padding:2px 8px;border-radius:4px;font-size:.75rem;font-weight:700}
.method-post{background:rgba(255,160,0,.12);color:#8a5800;padding:2px 8px;border-radius:4px;font-size:.75rem;font-weight:700}

.code-block{
  margin:16px 20px;padding:16px;border-radius:var(--radius-sm);
  background:var(--g4);color:var(--g1);font-family:var(--mono);font-size:.82rem;
  overflow-x:auto;line-height:1.7;border:1px solid rgba(0,255,136,.15);
}

/* ================================================
   MODALS
   ================================================ */
.modal{
  display:none;position:fixed;inset:0;z-index:2000;
  background:rgba(6,46,28,.45);backdrop-filter:blur(8px);
  align-items:center;justify-content:center;padding:20px;
}
.modal.active{display:flex}
.modal-content{
  background:var(--card2);border:1px solid var(--border);border-radius:var(--radius);
  width:100%;max-width:520px;max-height:85vh;overflow-y:auto;
  box-shadow:0 20px 60px rgba(10,60,34,.2);animation:modalIn .3s ease;
}
.modal-wide{max-width:720px}
@keyframes modalIn{from{opacity:0;transform:scale(.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}
.modal-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--border);
}
.modal-header h3{font-size:1.05rem;font-weight:700;color:var(--g4);display:flex;align-items:center;gap:8px}
.modal-header h3 i{color:var(--g1)}
.modal-close{
  background:none;border:none;font-size:1.5rem;color:var(--text3);padding:4px 8px;
  border-radius:var(--radius-sm);transition:all var(--transition);
}
.modal-close:hover{background:rgba(220,50,50,.08);color:#b33}
.modal-body{padding:20px}

/* ================================================
   NOTIFICATIONS
   ================================================ */
.notification-container{
  position:fixed;top:calc(var(--nav-h) + 12px);right:16px;z-index:3000;
  display:flex;flex-direction:column;gap:8px;max-width:380px;width:calc(100% - 32px);
}
.notification{
  display:flex;align-items:flex-start;gap:12px;padding:14px 16px;
  border-radius:var(--radius-sm);background:var(--card2);
  border:1px solid var(--border);box-shadow:var(--shadow-lg);
  animation:slideIn .3s ease;transition:all .3s ease;
}
@keyframes slideIn{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:translateX(0)}}
.notification-icon{font-size:1.2rem;flex-shrink:0;margin-top:2px}
.notification.success .notification-icon{color:var(--g1)}
.notification.error .notification-icon{color:#e53935}
.notification.warning .notification-icon{color:#ffa000}
.notification.info .notification-icon{color:#00b4dc}
.notification-title{font-size:.85rem;font-weight:700;color:var(--text)}
.notification-message{font-size:.8rem;color:var(--text3);margin-top:2px}

/* ================================================
   RESPONSIVE — Tablet
   ================================================ */
@media (max-width:1024px){
  .sidebar{width:220px}
  .content{margin-left:220px;padding:24px 20px}
  .cards-grid{grid-template-columns:repeat(2,1fr)}
  .quick-actions{grid-template-columns:repeat(2,1fr)}
}

/* ================================================
   RESPONSIVE — Mobile
   ================================================ */
@media (max-width:768px){
  :root{--nav-h:54px;--sidebar-w:0px}

  .nav-toggle{display:block}
  .nav-status{display:none}

  .sidebar{
    position:fixed;top:var(--nav-h);left:0;bottom:0;width:260px;
    transform:translateX(-100%);z-index:1100;
    background:rgba(255,255,255,.96);box-shadow:4px 0 30px rgba(10,60,34,.12);
  }
  .sidebar.open{transform:translateX(0)}

  /* overlay */
  .sidebar-overlay{
    display:none;position:fixed;inset:0;top:var(--nav-h);
    background:rgba(6,46,28,.3);z-index:1050;
  }
  .sidebar-overlay.active{display:block}

  .content{margin-left:0;padding:20px 14px 32px}

  .section-header h1{font-size:1.4rem}
  .cards-grid{grid-template-columns:1fr 1fr;gap:12px}
  .card{padding:16px 14px;gap:12px}
  .card-icon{width:42px;height:42px;font-size:1.1rem;border-radius:10px}
  .card-value{font-size:1.3rem}

  .quick-actions{grid-template-columns:1fr;gap:10px;padding:14px}
  .action-btn{padding:12px 14px}

  .form-grid{grid-template-columns:1fr;padding:14px}
  .form-actions{padding:0 14px 14px}

  .filter-bar{flex-direction:column;align-items:stretch}
  .filter-group{justify-content:space-between}

  .status-cards{grid-template-columns:1fr 1fr;gap:12px}
  .status-card{padding:16px 12px}

  .panel-header{padding:12px 14px;flex-wrap:wrap;gap:8px}
  .data-table th,.data-table td{padding:10px 12px;font-size:.82rem}

  .notification-container{right:8px;left:8px;max-width:none;width:auto}

  .modal-content{margin:10px;max-height:90vh}
}

@media (max-width:480px){
  .cards-grid{grid-template-columns:1fr}
  .status-cards{grid-template-columns:1fr}
  .tools-grid{grid-template-columns:1fr}
}

/* ================================================
   UTILITY
   ================================================ */
.text-center{text-align:center}
.text-muted{color:var(--text3)}
.hidden{display:none!important}

/* Category tag colors */
.category-public{--cat:rgba(0,255,136,.1);--cat-text:var(--g3)}
.category-hd{--cat:rgba(120,80,220,.1);--cat-text:#5a3aaa}
.category-hot{--cat:rgba(220,50,50,.08);--cat-text:#b33}
.category-google{--cat:rgba(255,160,0,.1);--cat-text:#8a5800}

/* Glow animation for important elements */
@keyframes glow-pulse{
  0%,100%{box-shadow:0 0 5px rgba(0,255,136,.2)}
  50%{box-shadow:0 0 20px rgba(0,255,136,.4)}
}

/* Print */
@media print{
  .navbar,.sidebar,.notification-container{display:none!important}
  .content{margin-left:0!important;padding:0!important}
}