/* Campus UI Kit — ชุดสไตล์กลางของระบบวิทยาลัย (ยกโทนมาจากเว็บ campus-cms)
   ใช้ซ้ำในระบบอื่นได้โดยคัดลอกโฟลเดอร์ ui-kit/ ไปทั้งก้อน แล้วใส่ <link rel="stylesheet" href="ui-kit/campus-ui.css">
   - เปลี่ยนสีทั้งระบบที่ตัวแปรใน :root (ส่วน "tokens") ที่เดียว
   - โหมดมืด: ใส่ class "dark" ที่ <html> (หรือปล่อยตามระบบ) · ห้ามใส่สีตายตัวในคอมโพเนนต์ ให้ใช้ var()/color-mix() */
@import url('fonts.css');

/* ---------- tokens ---------- */
:root{
  --bg:#FFFBF7; --ink:#1B2A40; --muted:#4A5970;
  --primary:#FFB98E; --primary-soft:#FFE9DA; --primary-deep:#C75B20; --on-primary-deep:#fff;
  --secondary:#BFE4F8; --secondary-soft:#E8F5FD; --secondary-deep:#1E78B0; --on-secondary-deep:#fff;
  --card:#fff; --line:#F1E3D8;
  --ok:#157347; --ok-soft:#E3F5EA; --warn:#8A5A00; --warn-soft:#FFF3D6; --err:#B42318; --err-soft:#FDE8E6;
  --radius:18px; --radius-sm:10px; --radius-btn:999px; --wrap:1120px;
  --font:'Sarabun','Noto Sans Thai',system-ui,-apple-system,'Segoe UI',sans-serif;
  --shadow:0 14px 34px color-mix(in srgb,var(--ink) 10%,transparent);
}
html.dark{
  --bg:#12161F; --ink:#E7EBF2; --muted:#A3ADBE;
  --primary:#E59A6C; --primary-soft:#2A2019; --primary-deep:#F0A877; --on-primary-deep:#1B1209;
  --secondary:#2B5A78; --secondary-soft:#14212C; --secondary-deep:#7CC2EA; --on-secondary-deep:#08131B;
  --card:#1A202C; --line:#2C3445;
  --ok:#5FD08F; --ok-soft:#14261C; --warn:#F2C45E; --warn-soft:#2B2312; --err:#FF8A80; --err-soft:#2D1816;
}
@media (prefers-color-scheme:dark){
  html:not(.light):not(.dark){
    --bg:#12161F; --ink:#E7EBF2; --muted:#A3ADBE;
    --primary:#E59A6C; --primary-soft:#2A2019; --primary-deep:#F0A877; --on-primary-deep:#1B1209;
    --secondary:#2B5A78; --secondary-soft:#14212C; --secondary-deep:#7CC2EA; --on-secondary-deep:#08131B;
    --card:#1A202C; --line:#2C3445;
    --ok:#5FD08F; --ok-soft:#14261C; --warn:#F2C45E; --warn-soft:#2B2312; --err:#FF8A80; --err-soft:#2D1816;
  }
}

/* ---------- base ---------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-weight:300;font-size:16px;line-height:1.75;background:var(--bg);color:var(--ink);transition:background-color .3s,color .3s}
a{color:var(--secondary-deep);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font);line-height:1.3;margin:0 0 .5em}
b,strong,th,label{font-weight:600}
img,svg{max-width:100%}
.wrap{width:min(var(--wrap),100% - 32px);margin:0 auto}
:focus-visible{outline:3px solid var(--secondary-deep);outline-offset:2px}
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:var(--primary-deep);color:var(--on-primary-deep);padding:8px 16px;border-radius:var(--radius-sm)}
.skip:focus{left:8px}
.muted{color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
[hidden]{display:none!important}

/* ---------- ปุ่ม ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--primary-deep);color:var(--on-primary-deep);padding:10px 24px;border-radius:var(--radius-btn);font:inherit;font-weight:600;border:2px solid transparent;cursor:pointer;box-shadow:0 6px 16px color-mix(in srgb,var(--primary-deep) 28%,transparent);transition:transform .2s,box-shadow .2s,filter .2s;text-decoration:none}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn.ghost{background:transparent;color:var(--primary-deep);border-color:var(--primary-deep);box-shadow:none}
.btn.secondary{background:var(--secondary-deep);color:var(--on-secondary-deep);box-shadow:0 6px 16px color-mix(in srgb,var(--secondary-deep) 28%,transparent)}
.btn.sm{padding:5px 14px;font-size:14px}
.btn.lg{padding:14px 34px;font-size:18px}
.btn.icon{padding:8px;width:40px;height:40px;border-radius:var(--radius-round,999px)}
.btn.danger{background:var(--err);color:#fff;box-shadow:none}
.btn-g{display:inline-flex;align-items:center;gap:10px;background:#fff;color:#1f1f1f;border:1px solid #dadce0;padding:9px 20px;border-radius:var(--radius-btn);font:inherit;font-weight:600;cursor:pointer}
.btn-g:hover{text-decoration:none;background:#f8f9fa}

/* ---------- หัวเว็บ / ท้ายเว็บ ---------- */
header.site{background:color-mix(in srgb,var(--card) 92%,transparent);backdrop-filter:blur(8px);border-bottom:3px solid var(--primary);position:sticky;top:0;z-index:40}
.bar{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:17px;color:var(--ink);line-height:1.25}
.brand:hover{text-decoration:none}
.brand small{display:block;font-weight:400;font-size:12px;color:var(--muted)}
.brand .logo{width:44px;height:44px;flex:none;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:var(--ink)}
.bar-sp{flex:1}
.bar-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
footer.site{margin-top:64px;border-top:1px solid var(--line);background:var(--card);padding:28px 0;color:var(--muted);font-size:14px}
footer.site .wrap{display:flex;gap:16px;justify-content:space-between;flex-wrap:wrap}

/* ---------- hero ---------- */
.hero{background:linear-gradient(135deg,var(--primary-soft) 0%,color-mix(in srgb,var(--primary-soft) 45%,var(--bg)) 40%,var(--secondary-soft) 100%);padding:56px 0;position:relative;overflow:hidden;isolation:isolate}
.hero::after{content:'';position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,var(--secondary) 0%,transparent 70%);opacity:.6;z-index:-1}
.hero h1{font-size:clamp(28px,5vw,44px);margin:0 0 10px}
.hero p{font-size:18px;margin:0;color:var(--muted);max-width:640px}
.hero.small{padding:32px 0}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}

/* ---------- ส่วนเนื้อหา / การ์ด ---------- */
section.block{padding:40px 0 8px}
.sec-title{font-size:26px;margin:0 0 6px;display:flex;align-items:center;gap:12px}
.sec-title::before{content:'';flex:none;width:8px;height:28px;border-radius:var(--radius-sm);background:linear-gradient(var(--primary),var(--secondary))}
.sec-sub{color:var(--muted);margin:0 0 22px}
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 2px 8px color-mix(in srgb,var(--ink) 4%,transparent)}
.card.pad-lg{padding:30px}
.card.hover{transition:transform .2s,box-shadow .2s,border-color .2s;cursor:pointer;text-align:left;font:inherit;color:inherit;width:100%}
.card.hover:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary)}
.card h3{font-size:18px;margin:12px 0 4px}
.card p{margin:0;color:var(--muted);font-size:15px;line-height:1.6}
.ico-chip{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--primary-soft);color:var(--primary-deep)}
.ico-chip.blue{background:var(--secondary-soft);color:var(--secondary-deep)}
.ico-chip svg{width:26px;height:26px}

/* ---------- ฟอร์ม ---------- */
.field{display:flex;flex-direction:column;gap:4px;margin-bottom:14px}
.field>label,.field>.lbl{font-size:14px;font-weight:600}
.field .hint{font-size:13px;color:var(--muted)}
input:not([type]),input[type=text],input[type=tel],input[type=email],input[type=password],input[type=search],input[type=number],select,textarea{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:10px 14px;min-width:0;width:100%}
input:not([type]):focus,input:focus,select:focus,textarea:focus{border-color:var(--secondary-deep)}
input[type=range]{width:100%;accent-color:var(--primary-deep)}
.seg{display:inline-flex;flex-wrap:wrap;gap:6px}
.seg label{font-weight:400}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg span{display:inline-block;padding:7px 16px;border-radius:var(--radius-btn);border:1px solid var(--line);background:var(--card);cursor:pointer;font-size:15px;transition:background-color .15s,border-color .15s}
.seg input:checked+span{background:var(--primary-soft);border-color:var(--primary-deep);color:var(--primary-deep);font-weight:600}
.seg input:focus-visible+span{outline:3px solid var(--secondary-deep);outline-offset:2px}

/* ---------- dropzone / รายการไฟล์ ---------- */
.dropzone{border:2px dashed color-mix(in srgb,var(--primary-deep) 55%,var(--line));border-radius:var(--radius);padding:34px 20px;text-align:center;background:color-mix(in srgb,var(--primary-soft) 55%,var(--card));transition:background-color .2s,border-color .2s;cursor:pointer;display:block;width:100%;font:inherit;color:inherit}
.dropzone:hover,.dropzone.over{background:var(--primary-soft);border-color:var(--primary-deep)}
.dropzone .big{font-size:18px;font-weight:600}
.dropzone .ico-chip{margin:0 auto 10px}
.files{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.files li{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:8px 12px}
.files .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.files .sz{color:var(--muted);font-size:13px;flex:none}
.files .x{border:0;background:transparent;color:var(--muted);cursor:pointer;width:32px;height:32px;border-radius:50%;font:inherit;font-size:16px;flex:none}
.files .x:hover{background:var(--err-soft);color:var(--err)}
.files .x:disabled{opacity:.3;cursor:default}
.files .x:disabled:hover{background:transparent;color:var(--muted)}

/* ---------- สถานะ / แจ้งเตือน ---------- */
.alert{border-radius:var(--radius-sm);padding:12px 16px;border:1px solid;font-size:15px}
.alert.ok{background:var(--ok-soft);color:var(--ok);border-color:color-mix(in srgb,var(--ok) 35%,transparent)}
.alert.warn{background:var(--warn-soft);color:var(--warn);border-color:color-mix(in srgb,var(--warn) 35%,transparent)}
.alert.err{background:var(--err-soft);color:var(--err);border-color:color-mix(in srgb,var(--err) 35%,transparent)}
.alert.info{background:var(--secondary-soft);color:var(--secondary-deep);border-color:color-mix(in srgb,var(--secondary-deep) 35%,transparent)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:2px 12px;border-radius:var(--radius-btn);font-size:13px;font-weight:600;background:var(--primary-soft);color:var(--primary-deep)}
.badge.blue{background:var(--secondary-soft);color:var(--secondary-deep)}
.badge.ok{background:var(--ok-soft);color:var(--ok)}
.progress{height:10px;border-radius:99px;background:var(--line);overflow:hidden}
.progress>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--primary),var(--primary-deep));border-radius:99px;transition:width .3s}
.progress.indet>i{width:40%;animation:ind 1.2s ease-in-out infinite}
@keyframes ind{0%{margin-left:-40%}100%{margin-left:100%}}
.spin{width:18px;height:18px;border-radius:50%;border:3px solid color-mix(in srgb,currentColor 25%,transparent);border-top-color:currentColor;animation:sp .8s linear infinite;display:inline-block}
@keyframes sp{to{transform:rotate(360deg)}}

/* ---------- ตาราง ---------- */
table.tbl{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--line)}
.tbl th,.tbl td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--line)}
.tbl th{background:var(--primary-soft);font-size:14px}
.tbl tr:last-child td{border-bottom:0}

/* ---------- modal ---------- */
.modal-bg{position:fixed;inset:0;background:color-mix(in srgb,#000 55%,transparent);display:grid;place-items:center;padding:16px;z-index:90;animation:fade .2s}
.modal{background:var(--card);border-radius:var(--radius);padding:30px;width:min(440px,100%);box-shadow:0 30px 70px rgba(0,0,0,.3);text-align:center}
.modal h2{margin:8px 0}
.modal .actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:20px}
@keyframes fade{from{opacity:0}}

/* ---------- หน้าเข้าสู่ระบบ (การ์ดกลางจอ) ---------- */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 20% 10%,var(--primary-soft),transparent 50%),radial-gradient(circle at 90% 90%,var(--secondary-soft),transparent 45%),var(--bg)}
.login-card{background:var(--card);padding:36px 32px;border-radius:var(--radius);box-shadow:0 20px 50px rgba(0,0,0,.08);width:min(400px,100%);display:flex;flex-direction:column;gap:14px;text-align:center}

/* ---------- เมนูผู้ใช้ ---------- */
.userchip{display:inline-flex;align-items:center;gap:8px;background:var(--secondary-soft);color:var(--secondary-deep);padding:4px 6px 4px 14px;border-radius:var(--radius-btn);font-size:14px;font-weight:600;max-width:100%}
.userchip span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:200px}

@media(max-width:700px){
  .hero{padding:36px 0}
  .brand small{display:none}
  .userchip span{max-width:110px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}