/* Tonkla LMS — Base Styles · Student-Friendly Edition */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700;800&family=Baloo+2:wght@500;600;700;800&display=swap');

/* ─── Design Tokens ─── */
:root {
    --tonkla-font: 'Nunito', 'Segoe UI', system-ui, sans-serif;
    --tonkla-font-display: 'Baloo 2', 'Nunito', cursive;
    --tonkla-font-size: 15px;

    --tonkla-primary: #0d9488;
    --tonkla-primary-dark: #0f766e;
    --tonkla-primary-light: rgba(13,148,136,0.08);
    --tonkla-primary-glow: rgba(13,148,136,0.18);

    --tonkla-coral: #f97066;
    --tonkla-coral-light: rgba(249,112,102,0.10);
    --tonkla-amber: #f59e0b;
    --tonkla-amber-light: rgba(245,158,11,0.10);
    --tonkla-violet: #8b5cf6;
    --tonkla-violet-light: rgba(139,92,246,0.10);
    --tonkla-sky: #38bdf8;
    --tonkla-sky-light: rgba(56,189,248,0.10);

    --tonkla-success: #10b981;
    --tonkla-warning: #f59e0b;
    --tonkla-error: #ef4444;
    --tonkla-text: #1e293b;
    --tonkla-text-soft: #64748b;
    --tonkla-text-muted: #94a3b8;

    --tonkla-bg: #f0fdf8;
    --tonkla-card-bg: #ffffff;
    --tonkla-border: #e2e8f0;
    --tonkla-border-light: #f1f5f9;

    --tonkla-radius: 12px;
    --tonkla-radius-lg: 16px;
    --tonkla-radius-xl: 20px;
    --tonkla-radius-pill: 100px;
    --tonkla-shadow: 0 2px 8px rgba(0,0,0,0.06);
    --tonkla-shadow-lg: 0 4px 20px rgba(0,0,0,0.08);
    --tonkla-shadow-color: 0 4px 14px rgba(13,148,136,0.12);

    --tonkla-secondary: var(--tonkla-violet);
}

/* ─── Reset ─── */
.tonkla-portal *, .tonkla-login-wrapper * { box-sizing: border-box; }

.tonkla-portal, .tonkla-login-wrapper {
    font-family: var(--tonkla-font);
    font-size: var(--tonkla-font-size);
    color: var(--tonkla-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.tonkla-portal {
    background: var(--tonkla-bg);
    min-height: 100vh;
    background-image: radial-gradient(circle at 1px 1px, rgba(13,148,136,0.035) 1px, transparent 0);
    background-size: 30px 30px;
}

/* ─── Buttons ─── */
.tonkla-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 22px;
    border: none;
    border-radius: var(--tonkla-radius);
    font-family: var(--tonkla-font);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(.34,1.56,.64,1);
    text-decoration: none;
    white-space: nowrap;
}
.tonkla-btn:hover { transform: translateY(-1px); }
.tonkla-btn:active { transform: translateY(0) scale(0.97); }

.tonkla-btn-primary {
    background: linear-gradient(135deg, var(--tonkla-primary), #14b8a6);
    color: #fff;
    box-shadow: 0 3px 12px rgba(13,148,136,0.28);
}
.tonkla-btn-primary:hover { box-shadow: 0 5px 18px rgba(13,148,136,0.32); opacity: 1; }

.tonkla-btn-secondary {
    background: linear-gradient(135deg, var(--tonkla-violet), #a78bfa);
    color: #fff;
    box-shadow: 0 3px 12px rgba(139,92,246,0.24);
}

.tonkla-btn-success { background: linear-gradient(135deg, #059669, var(--tonkla-success)); color: #fff; box-shadow: 0 3px 10px rgba(16,185,129,0.24); }
.tonkla-btn-warning { background: linear-gradient(135deg, #d97706, var(--tonkla-amber)); color: #fff; box-shadow: 0 3px 10px rgba(245,158,11,0.24); }
.tonkla-btn-danger  { background: linear-gradient(135deg, #dc2626, #ef4444); color: #fff; box-shadow: 0 3px 10px rgba(239,68,68,0.24); border-color: transparent; }
.tonkla-btn-danger:hover { box-shadow: 0 5px 16px rgba(239,68,68,0.28); opacity: 1; }

.tonkla-btn-outline {
    background: transparent;
    border: 2px solid var(--tonkla-primary);
    color: var(--tonkla-primary);
    font-weight: 700;
}
.tonkla-btn-outline:hover { background: var(--tonkla-primary); color: #fff; box-shadow: var(--tonkla-shadow-color); }

.tonkla-btn-outline-sm {
    background: transparent;
    border: 2px solid var(--tonkla-border);
    color: var(--tonkla-text-soft);
    padding: 6px 14px;
    font-size: 13px;
    border-radius: 10px;
    font-weight: 700;
}
.tonkla-btn-outline-sm:hover { background: var(--tonkla-primary-light); color: var(--tonkla-primary); border-color: var(--tonkla-primary); }

.tonkla-btn-ghost { background: transparent; color: var(--tonkla-text); padding: 8px 14px; }
.tonkla-btn-ghost:hover { background: var(--tonkla-primary-light); color: var(--tonkla-primary); }

.tonkla-btn-sm { padding: 7px 16px; font-size: 13px; border-radius: 10px; }
.tonkla-btn-lg { padding: 14px 30px; font-size: 16px; border-radius: var(--tonkla-radius-lg); }
.tonkla-btn-icon { padding: 8px; border-radius: 10px; background: transparent; }
.tonkla-btn-icon:hover { background: var(--tonkla-primary-light); color: var(--tonkla-primary); }
.tonkla-btn-icon-sm { padding: 5px 10px; font-size: 13px; border: 2px solid var(--tonkla-border); border-radius: 8px; background: #fff; cursor: pointer; font-family: inherit; font-weight: 600; }
.tonkla-btn-icon-sm:hover { background: var(--tonkla-primary-light); border-color: var(--tonkla-primary); color: var(--tonkla-primary); }

/* ─── Inputs ─── */
.tonkla-input, .tonkla-select, .tonkla-textarea {
    width: 100%;
    height: 44px;
    padding: 0 16px;
    border: 2px solid var(--tonkla-border);
    border-radius: var(--tonkla-radius);
    font-family: var(--tonkla-font);
    font-size: 14px;
    font-weight: 500;
    line-height: 40px;
    color: var(--tonkla-text);
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.tonkla-input:focus, .tonkla-select:focus, .tonkla-textarea:focus {
    outline: none;
    border-color: var(--tonkla-primary);
    box-shadow: 0 0 0 4px var(--tonkla-primary-glow);
}
.tonkla-textarea { height: auto; min-height: 100px; padding: 12px 16px; line-height: 1.7; resize: vertical; }
.tonkla-select {
    appearance: none; -webkit-appearance: none; cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%230d9488' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 14px center; padding-right: 38px;
}
.tonkla-input::placeholder { color: var(--tonkla-text-muted); }
.tonkla-input[type="number"] { -moz-appearance: textfield; }
.tonkla-input[type="color"] { padding: 4px; height: 44px; width: 44px; cursor: pointer; }

.tonkla-form-group { margin-bottom: 18px; }
.tonkla-form-group label { display: block; font-size: 13px; font-weight: 700; color: var(--tonkla-text); margin-bottom: 6px; }
.tonkla-form-row { display: flex; gap: 16px; flex-wrap: wrap; }
.tonkla-form-row > * { flex: 1; min-width: 200px; }

/* ─── Cards ─── */
.tonkla-card {
    background: var(--tonkla-card-bg);
    border-radius: var(--tonkla-radius-lg);
    box-shadow: var(--tonkla-shadow);
    padding: 22px;
    border: 2px solid transparent;
    transition: all 0.3s cubic-bezier(.34,1.56,.64,1);
}
.tonkla-card:hover { box-shadow: var(--tonkla-shadow-lg); }
.tonkla-card-clickable { cursor: pointer; }
.tonkla-card-clickable:hover { transform: translateY(-3px); box-shadow: var(--tonkla-shadow-lg); border-color: var(--tonkla-primary-glow); }

/* ─── Badges ─── */
.tonkla-badge { display: inline-flex; align-items: center; padding: 4px 12px; border-radius: var(--tonkla-radius-pill); font-size: 12px; font-weight: 700; }
.tonkla-badge-primary { background: var(--tonkla-primary-light); color: var(--tonkla-primary); }
.tonkla-badge-success { background: rgba(16,185,129,0.12); color: var(--tonkla-success); }
.tonkla-badge-warning { background: var(--tonkla-amber-light); color: #b45309; }
.tonkla-badge-error  { background: rgba(239,68,68,0.12); color: var(--tonkla-error); }

/* ─── Progress bar ─── */
.tonkla-progress { height: 10px; background: #e2e8f0; border-radius: var(--tonkla-radius-pill); overflow: hidden; box-shadow: inset 0 1px 3px rgba(0,0,0,0.06); }
.tonkla-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--tonkla-primary), #2dd4bf, var(--tonkla-sky));
    background-size: 200% 100%;
    border-radius: var(--tonkla-radius-pill);
    transition: width 0.6s cubic-bezier(.34,1.2,.64,1);
    animation: tonklaShimmer 2.5s ease-in-out infinite;
}
@keyframes tonklaShimmer { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

/* ─── Tables ─── */
.tonkla-table { width: 100%; border-collapse: separate; border-spacing: 0; }
.tonkla-table th, .tonkla-table td { padding: 12px 16px; text-align: left; }
.tonkla-table th { font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em; color: var(--tonkla-text-soft); background: #f0fdf4; border-bottom: 2px solid var(--tonkla-border); }
.tonkla-table td { border-bottom: 1px solid var(--tonkla-border-light); }
.tonkla-table tr:hover td { background: var(--tonkla-primary-light); }

/* ─── Toast ─── */
.tonkla-toast {
    position: fixed; bottom: 24px; right: 24px; padding: 14px 24px; border-radius: var(--tonkla-radius);
    background: #1e293b; color: #fff; font-size: 14px; font-weight: 700;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15); z-index: 100000;
    animation: tonklaToastIn 0.4s cubic-bezier(.34,1.56,.64,1);
}
.tonkla-toast-success { background: linear-gradient(135deg, #059669, var(--tonkla-success)); }
.tonkla-toast-error   { background: linear-gradient(135deg, #dc2626, #ef4444); }
@keyframes tonklaToastIn { from { transform: translateY(24px) scale(0.9); opacity: 0; } to { transform: translateY(0) scale(1); opacity: 1; } }

/* ─── Modal ─── */
.tonkla-modal { position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 99999; display: flex; align-items: center; justify-content: center; animation: tonklaFadeIn 0.25s ease; }
.tonkla-modal-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(15,23,42,0.45); backdrop-filter: blur(6px); }
.tonkla-modal-content {
    position: relative; background: var(--tonkla-card-bg); border-radius: var(--tonkla-radius-xl);
    box-shadow: 0 16px 48px rgba(0,0,0,0.14); width: 90%; max-width: 700px; max-height: 85vh;
    display: flex; flex-direction: column; animation: tonklaModalIn 0.35s cubic-bezier(.34,1.56,.64,1);
    border: 2px solid rgba(13,148,136,0.08);
}
.tonkla-modal-header {
    display: flex; align-items: center; justify-content: space-between; padding: 22px 26px;
    border-bottom: 2px solid var(--tonkla-border-light);
    background: linear-gradient(135deg, rgba(13,148,136,0.04), rgba(56,189,248,0.03));
    border-radius: var(--tonkla-radius-xl) var(--tonkla-radius-xl) 0 0;
}
.tonkla-modal-header h3 { font-family: var(--tonkla-font-display); font-size: 20px; font-weight: 700; color: var(--tonkla-primary-dark); }
.tonkla-modal-close { width: 36px; height: 36px; border: none; background: transparent; font-size: 22px; cursor: pointer; border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--tonkla-text-soft); transition: all 0.2s; }
.tonkla-modal-close:hover { background: var(--tonkla-coral-light); color: var(--tonkla-coral); }
.tonkla-modal-body { padding: 24px 26px; overflow-y: auto; flex: 1; }
.tonkla-modal-footer { padding: 16px 26px; border-top: 2px solid var(--tonkla-border-light); display: flex; justify-content: flex-end; gap: 10px; background: #fafffe; border-radius: 0 0 var(--tonkla-radius-xl) var(--tonkla-radius-xl); }
@keyframes tonklaFadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes tonklaModalIn { from { transform: translateY(20px) scale(0.95); opacity: 0; } to { transform: translateY(0) scale(1); opacity: 1; } }

/* ─── Empty states ─── */
.tonkla-empty { text-align: center; padding: 60px 20px; color: var(--tonkla-text-muted); }
.tonkla-empty svg { margin-bottom: 16px; opacity: 0.4; }
.tonkla-empty h3 { font-family: var(--tonkla-font-display); font-size: 20px; color: var(--tonkla-text-soft); margin-bottom: 8px; }
.tonkla-empty p { font-size: 14px; }

/* ─── Loading ─── */
.tonkla-spinner { display: inline-block; width: 26px; height: 26px; border: 3px solid #e2e8f0; border-top-color: var(--tonkla-primary); border-right-color: var(--tonkla-sky); border-radius: 50%; animation: tonklaSpin 0.7s linear infinite; vertical-align: middle; margin-right: 8px; }
@keyframes tonklaSpin { to { transform: rotate(360deg); } }
.tonkla-loading { display: flex; align-items: center; justify-content: center; padding: 40px; gap: 12px; color: var(--tonkla-text-soft); font-weight: 600; text-align: center; }

/* ─── Responsive ─── */
@media (max-width: 768px) {
    .tonkla-form-row { flex-direction: column; }
    .tonkla-form-row > * { min-width: 100%; }
    .tonkla-modal-content { width: 95%; max-height: 90vh; border-radius: var(--tonkla-radius-lg); }
    .tonkla-modal-header { border-radius: var(--tonkla-radius-lg) var(--tonkla-radius-lg) 0 0; }
    .tonkla-modal-footer { border-radius: 0 0 var(--tonkla-radius-lg) var(--tonkla-radius-lg); }
}