/* ============================================================
   SpokenLearn — styles.css  v3
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Baloo+2:wght@400;500;600;700&family=Noto+Sans:wght@300;400;500&display=swap');

:root {
  --rail-w:     60px;
  --sidebar-w:  230px;
  --topnav-h:   46px;
  --bc-h:       34px;

  --rail-bg:    #0e1621;
  --accent:     #00b7a8;
  --accent-dk:  #009688;
  --accent-gl:  rgba(0,183,168,0.14);

  --sb-bg:      #16202e;
  --sb-border:  rgba(255,255,255,0.07);
  --sb-hover:   rgba(255,255,255,0.05);
  --sb-act-bg:  rgba(0,183,168,0.1);
  --sb-act-tx:  #00d9c8;

  --page-bg:    #f4f6f9;
  --card-bg:    #ffffff;
  --card-bdr:   #e4e8ef;

  --tx-dark:    #1a2233;
  --tx-mid:     #4a5568;
  --tx-muted:   #8a97aa;
  --tx-white:   #ffffff;

  --clr-b:  #3b82f6;
  --clr-i:  #f59e0b;
  --clr-a:  #ef4444;
  --clr-h:  #8b5cf6;

  --r-sm: 5px;
  --r-md: 9px;
  --r-lg: 13px;
  --tr:   0.16s ease;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}
body{font-family:'Noto Sans',sans-serif;font-size:14px;background:var(--rail-bg);color:var(--tx-dark);-webkit-font-smoothing:antialiased;display:flex}

::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.12);border-radius:99px}

/* ===== ICON RAIL ===== */
.icon-rail{width:var(--rail-w);background:var(--rail-bg);display:flex;flex-direction:column;align-items:center;padding:0 0 20px;flex-shrink:0;border-right:1px solid rgba(255,255,255,0.04);z-index:200}
.rail-logo{width:100%;height:var(--topnav-h);display:flex;align-items:center;justify-content:center;cursor:pointer;background:var(--accent);margin-bottom:10px;transition:background var(--tr);flex-shrink:0}
.rail-logo:hover{background:var(--accent-dk)}
.rail-logo span{font-family:'Baloo 2',cursive;font-weight:700;font-size:15px;color:#fff}
.rail-item{width:48px;height:52px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;cursor:pointer;border-radius:var(--r-md);margin-bottom:2px;color:#5a7080;transition:color var(--tr),background var(--tr);position:relative}
.rail-item svg{width:20px;height:20px;fill:currentColor}
.rail-item span{font-size:9px;font-weight:500;letter-spacing:.2px;text-align:center;line-height:1}
.rail-item:hover{color:#a0b8c8;background:rgba(255,255,255,.04)}
.rail-item.active{color:var(--accent);background:var(--accent-gl)}
.rail-item.active::before{content:'';position:absolute;left:-1px;top:20%;bottom:20%;width:3px;background:var(--accent);border-radius:0 3px 3px 0}

/* ===== SIDEBAR ===== */
.sidebar{width:var(--sidebar-w);background:var(--sb-bg);border-right:1px solid var(--sb-border);display:flex;flex-direction:column;flex-shrink:0;overflow:hidden;z-index:100}
.sidebar-header{padding:12px 14px 10px;border-bottom:1px solid var(--sb-border);flex-shrink:0}
.sidebar-workspace{display:flex;align-items:center;gap:9px;margin-bottom:10px}
.ws-icon{width:28px;height:28px;background:var(--accent);border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;font-family:'Baloo 2',cursive;font-weight:700;font-size:12px;color:#fff;flex-shrink:0}
.ws-name{font-size:13px;font-weight:500;color:#fff}
.sidebar-search{width:100%;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-sm);padding:6px 10px;font-size:12px;color:#cdd8e8;outline:none;transition:border-color var(--tr),background var(--tr);font-family:'Noto Sans',sans-serif}
.sidebar-search::placeholder{color:#4a607a}
.sidebar-search:focus{border-color:var(--accent);background:rgba(0,183,168,.07)}
.sidebar-body{flex:1;overflow-y:auto;padding:8px 0 20px}
.sb-section-label{padding:12px 16px 4px;font-size:10px;font-weight:500;text-transform:uppercase;letter-spacing:1px;color:#3d5060}
.sb-parent{display:flex;align-items:center;gap:9px;padding:8px 16px;cursor:pointer;color:#8faabf;font-size:13px;transition:background var(--tr),color var(--tr);user-select:none;border-left:2px solid transparent}
.sb-parent:hover{background:var(--sb-hover);color:#cdd8e8}
.sb-parent.active{color:var(--sb-act-tx);border-left-color:var(--accent);background:var(--sb-act-bg)}
.sb-child{display:flex;align-items:center;gap:9px;padding:7px 16px 7px 34px;cursor:pointer;font-size:12.5px;color:#5a7890;transition:background var(--tr),color var(--tr)}
.sb-child::before{content:'';width:5px;height:5px;border-radius:50%;background:#2a4060;flex-shrink:0;transition:background var(--tr)}
.sb-child:hover{background:var(--sb-hover);color:#cdd8e8}
.sb-child:hover::before{background:#6a90aa}
.sb-child.active{color:var(--sb-act-tx)}
.sb-child.active::before{background:var(--accent)}
.sb-badge{margin-left:auto;font-size:9px;font-weight:600;padding:2px 6px;border-radius:99px;text-transform:uppercase;letter-spacing:.3px}
.badge-b{background:rgba(59,130,246,.15);color:#60a5fa}
.badge-i{background:rgba(245,158,11,.15);color:#fbbf24}
.badge-a{background:rgba(239,68,68,.15);color:#f87171}
.badge-h{background:rgba(139,92,246,.15);color:#a78bfa}

/* ===== MAIN WRAP ===== */
.main-wrap{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--page-bg)}

/* ===== DYNAMIC TOPNAV ===== */
.topnav{height:var(--topnav-h);background:#fff;border-bottom:1px solid var(--card-bdr);display:flex;align-items:center;padding:0 20px;flex-shrink:0;gap:0}
.topnav-left{display:flex;align-items:center;gap:2px;flex:1;overflow:hidden}
.tnav{background:none;border:none;padding:0 14px;height:var(--topnav-h);font-size:13px;font-weight:500;color:var(--tx-mid);cursor:pointer;border-bottom:2px solid transparent;transition:color var(--tr),border-color var(--tr);font-family:'Noto Sans',sans-serif;white-space:nowrap}
.tnav:hover{color:var(--tx-dark)}
.tnav.active{color:var(--accent-dk);border-bottom-color:var(--accent)}
.topnav-right{display:flex;align-items:center;gap:10px;flex-shrink:0}
.user-avatar{width:32px;height:32px;background:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;color:#fff;cursor:pointer;font-family:'Baloo 2',cursive}

/* ===== BREADCRUMB ===== */
.breadcrumb{height:var(--bc-h);background:var(--card-bg);border-bottom:1px solid var(--card-bdr);display:flex;align-items:center;padding:0 22px;gap:6px;font-size:12px;color:var(--tx-muted);flex-shrink:0}
.bc-link{cursor:pointer;transition:color var(--tr)}
.bc-link:hover{color:var(--accent-dk)}
.bc-sep{color:#d0d8e4}
.bc-current{color:var(--tx-dark);font-weight:500}

/* ===== PAGE ===== */
.page{flex:1;overflow-y:auto;padding:24px 28px 60px}

/* ===== HOME HERO ===== */
.home-hero{background:linear-gradient(120deg,#0e2233 0%,#09372e 100%);border-radius:var(--r-lg);padding:28px 32px;margin-bottom:24px;position:relative;overflow:hidden}
.home-hero::before{content:'';position:absolute;right:-30px;top:-30px;width:200px;height:200px;background:radial-gradient(circle,rgba(0,183,168,.18) 0%,transparent 70%);border-radius:50%}
.home-hero h1{font-family:'Baloo 2',cursive;font-size:26px;font-weight:700;color:#fff;margin-bottom:6px;position:relative}
.home-hero h1 span{color:var(--accent)}
.home-hero p{font-size:13.5px;color:#7ab8b0;max-width:480px;line-height:1.6;position:relative}
.hero-stats{display:flex;gap:24px;margin-top:20px;position:relative}
.hero-stat .num{font-family:'Baloo 2',cursive;font-size:22px;font-weight:700;color:var(--accent)}
.hero-stat .lbl{font-size:11px;color:#5a8a80;margin-top:1px}

/* ===== SECTION HEADING ===== */
.sec-head{font-family:'Baloo 2',cursive;font-size:16px;font-weight:600;color:var(--tx-dark);margin-bottom:14px;margin-top:28px;display:flex;align-items:center;gap:8px}
.sec-head:first-of-type{margin-top:0}
.sec-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block}

/* ===== CARDS GRID ===== */
.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:13px}
.qcard{background:var(--card-bg);border:1px solid var(--card-bdr);border-radius:var(--r-md);padding:18px 16px;cursor:pointer;transition:border-color var(--tr),transform var(--tr),box-shadow var(--tr);position:relative;overflow:hidden}
.qcard::after{content:'';position:absolute;bottom:0;left:0;right:0;height:3px;border-radius:0 0 var(--r-md) var(--r-md);transform:scaleX(0);transform-origin:left;transition:transform var(--tr)}
.qcard:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,183,168,.1)}
.qcard:hover::after{transform:scaleX(1)}
.qcard.clr-b::after{background:var(--clr-b)}
.qcard.clr-i::after{background:var(--clr-i)}
.qcard.clr-a::after{background:var(--clr-a)}
.qcard.clr-h::after{background:var(--clr-h)}
.qcard.clr-t::after{background:var(--accent)}
.qcard .q-icon{font-size:24px;margin-bottom:10px}
.qcard .q-title{font-size:13px;font-weight:500;color:var(--tx-dark);margin-bottom:4px;line-height:1.35}
.qcard .q-sub{font-size:11px;color:var(--tx-muted)}
.qcard .q-level{display:inline-block;margin-top:8px;font-size:10px;font-weight:600;padding:2px 8px;border-radius:99px;text-transform:uppercase;letter-spacing:.3px}
.lv-b{background:rgba(59,130,246,.1);color:var(--clr-b)}
.lv-i{background:rgba(245,158,11,.1);color:var(--clr-i)}
.lv-a{background:rgba(239,68,68,.1);color:var(--clr-a)}
.lv-h{background:rgba(139,92,246,.1);color:var(--clr-h)}
.lv-t{background:rgba(0,183,168,.1);color:var(--accent-dk)}

/* ===== TENSE CARD WITH IMAGE ===== */
.tense-img-card{background:var(--card-bg);border:1px solid var(--card-bdr);border-radius:var(--r-lg);overflow:hidden;cursor:pointer;transition:transform var(--tr),box-shadow var(--tr)}
.tense-img-card:hover{transform:translateY(-3px);box-shadow:0 8px 28px rgba(0,0,0,.1)}
.tense-img-card .card-img{width:100%;height:130px;object-fit:cover;display:block}
.tense-img-card .card-img-placeholder{width:100%;height:130px;display:flex;align-items:center;justify-content:center;font-size:48px}
.tense-img-card .card-body{padding:14px 16px}
.tense-img-card .card-label{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;margin-bottom:5px}
.tense-img-card .card-title{font-family:'Baloo 2',cursive;font-size:15px;font-weight:700;color:var(--tx-dark);margin-bottom:4px}
.tense-img-card .card-sub{font-size:12px;color:var(--tx-muted);margin-bottom:10px}
.tense-img-card .card-types{font-size:11.5px;color:var(--accent-dk);font-weight:500}

/* ===== PRACTICE PROGRESS CARD ===== */
.prac-progress-wrap{background:var(--card-bg);border:1px solid var(--card-bdr);border-radius:var(--r-lg);padding:20px 22px;margin-bottom:20px}
.prac-progress-wrap h3{font-family:'Baloo 2',cursive;font-size:15px;font-weight:600;color:var(--tx-dark);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.prac-level-row{display:flex;align-items:center;gap:12px;margin-bottom:12px;padding:10px 14px;border-radius:var(--r-md);background:#f8fafc;border:1px solid #edf0f5;cursor:pointer;transition:border-color var(--tr)}
.prac-level-row:hover{border-color:var(--accent)}
.prac-level-icon{font-size:20px;flex-shrink:0}
.prac-level-info{flex:1}
.prac-level-name{font-size:13px;font-weight:500;color:var(--tx-dark);margin-bottom:4px}
.prac-level-sub{font-size:11px;color:var(--tx-muted)}
.prac-bar-wrap{flex:1;height:6px;background:#e4e8ef;border-radius:99px;overflow:hidden;min-width:80px}
.prac-bar{height:100%;border-radius:99px;transition:width .6s ease}
.prac-pct{font-size:12px;font-weight:600;min-width:32px;text-align:right}

/* ===== DOC VIEW ===== */
.doc-wrap{max-width:720px;animation:fadeUp .2s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.doc-hero-img{width:100%;height:200px;object-fit:cover;border-radius:var(--r-lg);margin-bottom:20px;display:block}
.doc-hero-placeholder{width:100%;height:180px;border-radius:var(--r-lg);margin-bottom:20px;display:flex;align-items:center;justify-content:center;font-size:72px}
.doc-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:22px;padding-bottom:16px;border-bottom:2px solid #edf0f5}
.doc-top-left{display:flex;flex-direction:column;gap:8px}
.doc-badges{display:flex;gap:6px;flex-wrap:wrap}
.doc-badge{font-size:10px;font-weight:600;padding:3px 10px;border-radius:99px;text-transform:uppercase;letter-spacing:.4px;border:1px solid transparent}
.doc-title{font-family:'Baloo 2',cursive;font-size:22px;font-weight:700;color:var(--tx-dark);letter-spacing:-.3px;line-height:1.25}
.doc-desc{font-size:13px;color:var(--tx-mid);line-height:1.6}
.doc-body{font-size:14px;line-height:1.85;color:var(--tx-mid)}
.doc-body h3{font-family:'Baloo 2',cursive;font-size:15px;font-weight:600;color:var(--tx-dark);margin:24px 0 8px}
.doc-body h3:first-child{margin-top:0}
.doc-body p{margin-bottom:10px}
.doc-body strong{color:var(--tx-dark);font-weight:500}
.doc-body ul{padding-left:18px;margin-bottom:10px}
.doc-body ul li{margin-bottom:6px}
.ex{background:var(--card-bg);border:1px solid #e2e8f0;border-left:3px solid var(--accent);border-radius:0 var(--r-md) var(--r-md) 0;padding:11px 16px;margin:8px 0 14px;font-size:13.5px;color:var(--tx-dark);line-height:1.75}
.ex .hi{color:#7c3aed;font-style:italic}
.ex .en{color:var(--clr-b)}
.ex .wrong{color:var(--clr-a);text-decoration:line-through}
.ex .right{color:#16a34a}
.exercise{background:var(--card-bg);border:1px solid var(--card-bdr);border-radius:var(--r-md);padding:16px 18px;margin:14px 0}
.exercise .ex-num{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--tx-muted);margin-bottom:6px}
.exercise .ex-q{font-size:14px;font-weight:500;color:var(--tx-dark);margin-bottom:8px}
.exercise .ex-hint{font-size:12px;color:var(--accent-dk);margin-top:8px;font-style:italic}
.tip{background:rgba(0,183,168,.06);border:1px solid rgba(0,183,168,.2);border-radius:var(--r-md);padding:12px 16px;margin:14px 0;font-size:13px;color:var(--tx-mid)}
.tip strong{color:var(--accent-dk)}

/* ===== TENSE SUB-TYPE CARD ===== */
.tense-type-card{background:var(--card-bg);border:1px solid var(--card-bdr);border-radius:var(--r-lg);overflow:hidden;margin-bottom:18px;animation:fadeUp .2s ease}
.tense-type-card .tt-hero{width:100%;height:160px;object-fit:cover;display:block}
.tense-type-card .tt-hero-placeholder{width:100%;height:120px;display:flex;align-items:center;justify-content:center;font-size:48px}
.tense-type-card .tt-header{padding:16px 22px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px}
.tense-type-card .tt-body{padding:18px 22px}

/* ===== PROGRESS ===== */
.progress-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin-top:6px}
.prog-card{background:var(--card-bg);border:1px solid var(--card-bdr);border-radius:var(--r-md);padding:16px}
.prog-card .prog-label{font-size:12px;color:var(--tx-muted);margin-bottom:8px}
.prog-card .prog-title{font-size:14px;font-weight:500;color:var(--tx-dark);margin-bottom:10px}
.prog-bar-wrap{height:6px;background:#edf0f5;border-radius:99px;overflow:hidden}
.prog-bar{height:100%;border-radius:99px;background:var(--accent);transition:width .6s ease}
.prog-pct{font-size:12px;color:var(--tx-muted);margin-top:5px}

/* table link hover */
.tbl-link:hover{color:var(--accent) !important;text-decoration:underline}

@media(max-width:700px){
  :root{--sidebar-w:200px}
  .page{padding:16px 14px 40px}
  .home-hero{padding:20px}
  .home-hero h1{font-size:20px}
  .cards-grid{grid-template-columns:repeat(2,1fr)}
}