/* =========================================================
   AI Tutors — "Modern Scholar" tēma
   Fraunces (virsraksti) + Hanken Grotesk (teksts)
   Silts papīra fons, dziļa tinte, priežu zaļš akcents
   ========================================================= */

:root {
    --paper:        #F6F2E9;
    --paper-2:      #FFFDF8;
    --paper-3:      #EFE9DB;
    --ink:          #1F1D18;
    --ink-soft:     #6B655A;
    --ink-faint:    #9A9384;
    --accent:       #2D6A4F;
    --accent-bright:#40916C;
    --accent-soft:  #DCEAE1;
    --accent-faint: #EDF4EF;
    --line:         #E2DBCB;
    --line-strong:  #D2C9B5;
    --warn:         #B45309;
    --danger:       #B23A3A;
    --radius:       14px;
    --radius-sm:    9px;
    --shadow-sm:    0 1px 2px rgba(31,29,24,.05), 0 2px 8px rgba(31,29,24,.04);
    --shadow-md:    0 4px 14px rgba(31,29,24,.08), 0 12px 36px rgba(31,29,24,.06);
}

* , *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
    font-family: 'Hanken Grotesk', system-ui, sans-serif;
    background-color: var(--paper);
    /* smalka papīra tekstūra */
    background-image:
        radial-gradient(var(--line) 0.5px, transparent 0.5px),
        radial-gradient(var(--line) 0.5px, var(--paper) 0.5px);
    background-size: 28px 28px;
    background-position: 0 0, 14px 14px;
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
    line-height: 1.55;
}

h1, h2, h3, .display {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.1;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-bright); }

button { font-family: inherit; cursor: pointer; }

/* ---------- Pogas ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 22px;
    background: var(--accent); color: #fff;
    border: none; border-radius: var(--radius-sm);
    font-size: 15px; font-weight: 600;
    transition: transform .15s, filter .15s, box-shadow .15s;
    box-shadow: var(--shadow-sm);
}
.btn:hover { filter: brightness(1.07); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; filter: none; }

.btn-ghost {
    background: transparent; color: var(--ink-soft);
    border: 1px solid var(--line-strong); box-shadow: none;
}
.btn-ghost:hover { background: var(--paper-3); color: var(--ink); filter: none; }

.btn-block { width: 100%; }

/* ---------- Ievades lauki ---------- */
.field { margin-bottom: 18px; }
.field label {
    display: block; font-size: 13px; font-weight: 600;
    color: var(--ink-soft); margin-bottom: 7px;
    letter-spacing: .01em;
}
input[type=text], input[type=password], select {
    width: 100%; padding: 13px 15px;
    background: var(--paper-2);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    font-family: inherit; font-size: 15px; color: var(--ink);
    outline: none; transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-faint);
}
input::placeholder { color: var(--ink-faint); }

/* =========================================================
   AUTORIZĀCIJAS LAPAS (login / register)
   ========================================================= */
.auth-wrap {
    min-height: 100vh; display: grid; place-items: center; padding: 24px;
}
.auth-card {
    width: 100%; max-width: 430px;
    background: var(--paper-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 40px 38px;
    box-shadow: var(--shadow-md);
    animation: rise .5s cubic-bezier(.2,.7,.3,1) both;
}
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 26px; }
.brand-mark {
    width: 46px; height: 46px; border-radius: 13px;
    background: var(--accent); color: #fff;
    display: grid; place-items: center; flex-shrink: 0;
    font-family: 'Fraunces', serif; font-weight: 600; font-size: 24px;
    box-shadow: var(--shadow-sm);
}
.brand-name { font-family: 'Fraunces', serif; font-size: 22px; font-weight: 600; }
.brand-tag { font-size: 13px; color: var(--ink-faint); }

.auth-card h1 { font-size: 28px; margin-bottom: 6px; }
.auth-card .sub { color: var(--ink-soft); font-size: 15px; margin-bottom: 28px; }

.role-toggle { display: flex; gap: 10px; }
.role-opt {
    flex: 1; text-align: center; padding: 12px;
    border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
    background: var(--paper-2); color: var(--ink-soft);
    font-size: 14px; font-weight: 600; transition: all .15s;
}
.role-opt:hover { border-color: var(--accent-bright); }
.role-opt.active {
    background: var(--accent-faint); border-color: var(--accent); color: var(--accent);
}
.role-opt small { display: block; font-weight: 400; font-size: 12px; color: var(--ink-faint); margin-top: 2px; }

.alert {
    background: #FBEDED; border: 1px solid #EBC9C9; color: var(--danger);
    padding: 11px 14px; border-radius: var(--radius-sm);
    font-size: 14px; margin-bottom: 18px; display: none;
}
.alert.show { display: block; animation: rise .3s both; }

.auth-foot { text-align: center; margin-top: 22px; font-size: 14px; color: var(--ink-soft); }

/* =========================================================
   GALVENĀ APP LAPA (sidebar + chat)
   ========================================================= */
.layout { display: flex; height: 100vh; overflow: hidden; }

/* ---------- Sānjosla ---------- */
.sidebar {
    width: 290px; flex-shrink: 0;
    background: var(--paper-2);
    border-right: 1px solid var(--line);
    display: flex; flex-direction: column;
}
.sidebar-head {
    padding: 20px 18px 16px;
    border-bottom: 1px solid var(--line);
}
.sidebar-head .brand { margin-bottom: 16px; }
.sidebar-head .brand-mark { width: 38px; height: 38px; font-size: 20px; border-radius: 11px; }
.sidebar-head .brand-name { font-size: 18px; }

.new-chat-btn {
    width: 100%; padding: 12px;
    background: var(--accent); color: #fff;
    border: none; border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 600;
    display: flex; align-items: center; justify-content: center; gap: 8px;
    transition: filter .15s, transform .15s; box-shadow: var(--shadow-sm);
}
.new-chat-btn:hover { filter: brightness(1.07); transform: translateY(-1px); }

.conv-list { flex: 1; overflow-y: auto; padding: 12px 10px; }
.conv-list-label {
    font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
    color: var(--ink-faint); padding: 6px 10px 10px;
}
.conv-item {
    position: relative;
    padding: 11px 12px; margin-bottom: 3px;
    border-radius: var(--radius-sm);
    cursor: pointer; transition: background .12s;
    display: flex; flex-direction: column; gap: 2px;
}
.conv-item:hover { background: var(--paper-3); }
.conv-item.active { background: var(--accent-faint); }
.conv-item.active .conv-title { color: var(--accent); font-weight: 600; }
.conv-title {
    font-size: 14px; color: var(--ink); font-weight: 500;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    padding-right: 22px;
}
.conv-meta { font-size: 12px; color: var(--ink-faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-del {
    position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
    width: 24px; height: 24px; border: none; background: transparent;
    color: var(--ink-faint); border-radius: 6px; display: none;
    align-items: center; justify-content: center;
}
.conv-item:hover .conv-del { display: flex; }
.conv-del:hover { background: #FBEDED; color: var(--danger); }

.conv-empty { padding: 20px 12px; color: var(--ink-faint); font-size: 13px; text-align: center; line-height: 1.5; }

.sidebar-foot {
    padding: 14px 16px; border-top: 1px solid var(--line);
    display: flex; align-items: center; gap: 10px;
}
.avatar {
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--accent-soft); color: var(--accent);
    display: grid; place-items: center; font-weight: 700; font-size: 14px; flex-shrink: 0;
}
.user-meta { flex: 1; min-width: 0; }
.user-name { font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: 12px; color: var(--ink-faint); }
.logout-btn {
    border: none; background: transparent; color: var(--ink-faint);
    width: 32px; height: 32px; border-radius: 7px; display: grid; place-items: center;
    transition: all .12s;
}
.logout-btn:hover { background: var(--paper-3); color: var(--danger); }

/* ---------- Galvenais čata laukums ---------- */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.main-head {
    padding: 16px 28px; border-bottom: 1px solid var(--line);
    display: flex; align-items: center; gap: 12px; background: var(--paper-2);
    min-height: 64px;
}
.material-chip {
    display: inline-flex; align-items: center; gap: 9px;
    padding: 7px 14px; background: var(--accent-faint);
    border: 1px solid var(--accent-soft); border-radius: 100px;
    font-size: 13px; font-weight: 600; color: var(--accent);
}
.material-chip .subj { color: var(--ink-faint); font-weight: 400; }
.head-hint { color: var(--ink-faint); font-size: 14px; }

/* ziņas */
.messages {
    flex: 1; overflow-y: auto; padding: 30px 0;
    display: flex; flex-direction: column; gap: 22px;
}
.messages-inner { width: 100%; max-width: 760px; margin: 0 auto; padding: 0 28px;
    display: flex; flex-direction: column; gap: 22px; }

.msg { display: flex; gap: 14px; animation: rise .3s both; }
.msg-avatar {
    width: 34px; height: 34px; border-radius: 9px; flex-shrink: 0;
    display: grid; place-items: center; font-size: 14px; font-weight: 700;
    font-family: 'Fraunces', serif;
}
.msg.ai .msg-avatar { background: var(--accent); color: #fff; }
.msg.user .msg-avatar { background: var(--paper-3); color: var(--ink-soft); }
.msg-body { padding-top: 4px; }
.msg-name { font-size: 13px; font-weight: 700; margin-bottom: 4px; color: var(--ink-soft); }
.msg.ai .msg-name { color: var(--accent); }
.msg-text { font-size: 15.5px; line-height: 1.65; color: var(--ink); }
.msg-text strong { font-weight: 700; }
.msg-text em { font-style: italic; }
.msg-text code {
    background: var(--paper-3); padding: 1px 6px; border-radius: 5px;
    font-family: ui-monospace, monospace; font-size: 14px;
}

/* rakstīšanas indikators */
.typing { display: none; gap: 6px; padding: 8px 0; }
.typing.show { display: flex; }
.typing span {
    width: 8px; height: 8px; border-radius: 50%; background: var(--ink-faint);
    animation: bounce 1.3s infinite;
}
.typing span:nth-child(2) { animation-delay: .18s; }
.typing span:nth-child(3) { animation-delay: .36s; }
@keyframes bounce { 0%,60%,100% { transform: translateY(0); opacity: .5; } 30% { transform: translateY(-6px); opacity: 1; } }

/* tukšais stāvoklis */
.empty-state {
    flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
    text-align: center; padding: 40px; gap: 8px;
}
.empty-state .es-mark {
    width: 72px; height: 72px; border-radius: 20px; margin-bottom: 14px;
    background: var(--accent-faint); border: 1px solid var(--accent-soft);
    display: grid; place-items: center;
}
.empty-state h2 { font-size: 26px; }
.empty-state p { color: var(--ink-soft); max-width: 420px; }

/* ievades josla */
.composer { padding: 16px 28px 24px; border-top: 1px solid var(--line); background: var(--paper-2); }
.composer-inner {
    max-width: 760px; margin: 0 auto;
    display: flex; gap: 10px; align-items: flex-end;
    background: var(--paper-2); border: 1px solid var(--line-strong);
    border-radius: var(--radius); padding: 8px 8px 8px 16px;
    transition: border-color .15s, box-shadow .15s;
}
.composer-inner:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-faint); }
.composer textarea {
    flex: 1; border: none; outline: none; resize: none; background: transparent;
    font-family: inherit; font-size: 15.5px; color: var(--ink);
    line-height: 1.5; max-height: 160px; padding: 8px 0;
}
.composer textarea::placeholder { color: var(--ink-faint); }
.send-btn {
    width: 42px; height: 42px; border: none; border-radius: 10px; flex-shrink: 0;
    background: var(--accent); color: #fff; display: grid; place-items: center;
    transition: filter .15s, transform .15s;
}
.send-btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
.send-btn:disabled { opacity: .4; cursor: not-allowed; transform: none; }
.composer-note { max-width: 760px; margin: 8px auto 0; text-align: center; font-size: 12px; color: var(--ink-faint); }

/* =========================================================
   MODĀLAIS LOGS (materiāla izvēle + augšupielāde)
   ========================================================= */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(31,29,24,.45);
    backdrop-filter: blur(3px); display: none; place-items: center; z-index: 50; padding: 24px;
}
.modal-overlay.show { display: grid; animation: fade .2s both; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

.modal {
    width: 100%; max-width: 560px; max-height: 85vh; overflow-y: auto;
    background: var(--paper-2); border: 1px solid var(--line);
    border-radius: var(--radius); box-shadow: var(--shadow-md);
    animation: rise .3s both;
}
.modal-head { padding: 24px 26px 0; }
.modal-head h2 { font-size: 23px; margin-bottom: 4px; }
.modal-head p { color: var(--ink-soft); font-size: 14px; }
.modal-body { padding: 20px 26px 26px; }

.material-grid { display: flex; flex-direction: column; gap: 9px; margin-bottom: 8px; }
.material-card {
    display: flex; align-items: center; gap: 13px;
    padding: 14px 16px; border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm); cursor: pointer;
    transition: border-color .12s, background .12s, transform .12s; background: var(--paper-2);
}
.material-card:hover { border-color: var(--accent); background: var(--accent-faint); transform: translateX(2px); }
.material-card .mc-icon {
    width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
    background: var(--accent-faint); color: var(--accent);
    display: grid; place-items: center;
}
.material-card .mc-body { flex: 1; min-width: 0; }
.material-card .mc-title { font-weight: 600; font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.material-card .mc-sub { font-size: 13px; color: var(--ink-faint); }
.badge {
    font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 100px;
    background: var(--accent-soft); color: var(--accent); letter-spacing: .02em;
}
.badge.mine { background: var(--paper-3); color: var(--ink-soft); }

.material-card.add { border-style: dashed; color: var(--accent); justify-content: center; font-weight: 600; }
.material-card.add:hover { transform: none; }
.material-card.plain { border-style: dashed; }

.divider { display: flex; align-items: center; gap: 12px; margin: 18px 0; color: var(--ink-faint); font-size: 12px; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }

.upload-form { display: none; }
.upload-form.show { display: block; animation: rise .25s both; }
.checkbox-row { display: flex; align-items: center; gap: 9px; margin-bottom: 18px; font-size: 14px; color: var(--ink-soft); }
.checkbox-row input { width: auto; }

.file-drop {
    border: 1.5px dashed var(--line-strong); border-radius: var(--radius-sm);
    padding: 22px; text-align: center; color: var(--ink-faint); font-size: 14px;
    cursor: pointer; transition: all .15s; margin-bottom: 18px;
}
.file-drop:hover, .file-drop.over { border-color: var(--accent); background: var(--accent-faint); color: var(--accent); }
.file-drop.has-file { border-color: var(--accent); background: var(--accent-faint); color: var(--accent); font-weight: 600; }

.modal-close {
    position: absolute; top: 18px; right: 18px;
    width: 32px; height: 32px; border: none; background: var(--paper-3);
    border-radius: 8px; color: var(--ink-soft); display: grid; place-items: center;
}
.modal-close:hover { background: var(--line); }
.modal { position: relative; }

/* ---------- Ritjosla ---------- */
::-webkit-scrollbar { width: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 5px; border: 2px solid var(--paper-2); }
::-webkit-scrollbar-thumb:hover { background: var(--ink-faint); }

/* ---------- Responsīvs ---------- */
@media (max-width: 760px) {
    .sidebar { position: fixed; left: 0; top: 0; bottom: 0; z-index: 40; transform: translateX(-100%); transition: transform .25s; box-shadow: var(--shadow-md); }
    .sidebar.open { transform: translateX(0); }
    .menu-toggle { display: grid !important; }
    .messages-inner, .composer-inner, .composer-note { padding-left: 18px; padding-right: 18px; }
}
.menu-toggle {
    display: none; width: 38px; height: 38px; border: 1px solid var(--line-strong);
    background: var(--paper-2); border-radius: 9px; place-items: center; color: var(--ink-soft);
}