:root {
    --bg: #f3efe7;
    --paper: #fffdf8;
    --text: #1a1f2b;
    --primary: #0b5d6b;
    --secondary: #e76f51;
    --muted: #5e6472;
    --line: #d9d2c7;
}

* { box-sizing: border-box; }
html, body { overflow-x: hidden; }
body {
    margin: 0;
    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
    color: var(--text);
    background: radial-gradient(circle at top left, #f8f2e9, #efe8dc 45%, #e8dfd3);
}

.topbar {
    padding: 14px 20px;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
    position: sticky;
    top: 0;
    z-index: 10;
}
.brand { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.nav { display: flex; gap: 8px; flex-wrap: wrap; }
.nav-link {
    text-decoration: none;
    color: var(--text);
    padding: 7px 10px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: #fff;
}
.nav-link.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.container { max-width: 1100px; margin: 16px auto; padding: 0 14px 30px; }
.grid { display: grid; gap: 14px; }
.stats-grid { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.two-col { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 14px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.04);
}
.card h2, .card h3 { margin-top: 0; }
.stat p { font-size: 28px; font-weight: 700; margin: 8px 0 0; color: var(--primary); }

.exercise-list { display: grid; grid-template-columns: 1fr; gap: 12px; }
.exercise { padding-bottom: 16px; }
.exercise-text { line-height: 1.7; margin: 10px 0 14px; }
.timer {
    margin-top: 14px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.timer .time { font-weight: 700; color: var(--primary); min-width: 70px; }
button {
    border: none;
    background: var(--primary);
    color: #fff;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
}
button.secondary { background: var(--secondary); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.record-tools { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.playback { width: 100%; max-width: 380px; }
.record-activity {
    background: #f7f3eb;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 10px 12px;
    margin-bottom: 12px;
}
.record-activity p { margin: 6px 0; }
.record-activity ol { margin: 6px 0 8px 18px; }
.record-activity li { margin-bottom: 6px; line-height: 1.5; }

.form-grid { display: grid; gap: 10px; }
.form-grid label { display: grid; gap: 4px; font-size: 14px; }
.form-grid input, .form-grid textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
}
.form-grid select {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
}
.full { grid-column: 1 / -1; }
.inline-form { display: inline-flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-right: 10px; }
.control-row { display: flex; gap: 8px; flex-wrap: wrap; }

.generator-grid .card {
    min-width: 0;
}

.table { width: 100%; border-collapse: collapse; }
.table th, .table td { border: 1px solid var(--line); padding: 8px; text-align: left; vertical-align: top; }

.output-box {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    word-break: break-word;
    background: #0f1720;
    color: #eaf2ff;
    padding: 12px;
    border-radius: 10px;
    min-height: 160px;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
}

.progress-bar-wrap { margin-bottom: 12px; }
.progress-bar {
    height: 12px;
    background: #e8e2d7;
    border-radius: 999px;
    overflow: hidden;
}
.progress-bar span { display: block; height: 100%; background: linear-gradient(90deg, var(--secondary), var(--primary)); }

.success, .alert {
    border-radius: 8px;
    padding: 8px 10px;
    margin-bottom: 10px;
}
.success { background: #e3f7ea; border: 1px solid #86d7a1; }
.alert { background: #fbe8e8; border: 1px solid #eb9f9f; }

.login-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
}
.login-card {
    width: min(420px, 92vw);
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 18px;
}
.hint { color: var(--muted); font-size: 13px; }

@media (max-width: 700px) {
    .container { margin: 10px auto; padding: 0 10px 22px; }
    h1 { font-size: 1.95rem; line-height: 1.2; }
    .brand { font-size: 18px; }
    .nav { gap: 6px; }
    .nav-link { padding: 6px 10px; font-size: 14px; }
    .table { font-size: 13px; }
    .output-box { font-size: 13px; line-height: 1.5; }
    .generator-grid { grid-template-columns: 1fr; }
    .card { padding: 12px; border-radius: 12px; }
    .form-grid { gap: 8px; }
    .form-grid input, .form-grid textarea, .form-grid select { font-size: 16px; }
}