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

:root {
    --bg: #2d2d30;
    --bg-card: #38383b;
    --bg-input: #1e1e1e;
    --bg-progress: #2a2a2e;
    --border: #4a4a4e;
    --border-light: #5a5a5d;
    --text: #dcdcdc;
    --text-muted: #909090;
    --accent: #3d7eff;
    --accent-dark: #2f6bdb;
    --danger: #e05555;
    --success: #4caf50;
    --radius: 6px;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
}

.hidden { display: none !important; }
.mt-8 { margin-top: 8px; }

/* ===== LOGIN ===== */
.login-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: var(--bg);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px 36px;
    width: 380px;
    text-align: center;
}

.login-title {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}

.login-subtitle {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 28px;
}

.login-form { display: flex; flex-direction: column; gap: 12px; }

.login-form input {
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 12px 16px;
    color: var(--text);
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
}

.login-form input:focus { border-color: var(--accent); }

.btn-login {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    padding: 12px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 8px;
}

.btn-login:hover { background: var(--accent-dark); }

.login-error {
    color: var(--danger);
    font-size: 13px;
    min-height: 18px;
    margin-top: 4px;
}

/* ===== MAIN SCREEN ===== */
.main-screen {
    max-width: 1100px;
    margin: 0 auto;
    padding: 16px;
}

/* ===== HEADER ===== */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0 16px;
}

.app-header h1 {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
}

.header-right { display: flex; align-items: center; gap: 12px; }

.device-badge {
    background: var(--accent);
    color: #fff;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.btn-logout {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text);
    padding: 6px 16px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
}

.btn-logout:hover { background: var(--border); }

/* ===== TABS ===== */
.tabs {
    display: flex;
    gap: 4px;
    border-bottom: 2px solid var(--border);
    margin-bottom: 16px;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 10px 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
}

.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ===== CARD ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin-bottom: 12px;
}

.card-title {
    font-size: 15px;
    font-weight: 700;
    color: #e0e0e0;
    margin-bottom: 12px;
}

/* ===== ROW ===== */
.row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
    border: 1px solid var(--border-light);
    border-radius: 4px;
    padding: 8px 18px;
    color: var(--text);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn:hover { background: var(--border); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary { background: #4a4a4d; }
.btn-secondary:hover { background: #58585b; }

.btn-start {
    width: 100%;
    background: #505050;
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    padding: 14px;
    border: 1px solid #606060;
    border-radius: var(--radius);
    margin-bottom: 12px;
}

.btn-start:hover { background: #606060; }
.btn-start:disabled { background: #3a3a3c; color: #707070; }

.btn-clear {
    width: 100%;
    background: #5a5a5c;
    color: #fff;
    font-weight: 600;
    padding: 10px;
    border: 1px solid #6a6a6c;
    border-radius: var(--radius);
}

.btn-clear:hover { background: #6a6a6c; }

/* ===== INPUTS ===== */
.input {
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: 4px;
    padding: 8px 12px;
    color: var(--text);
    font-size: 14px;
    outline: none;
    flex: 1;
    min-width: 200px;
}

.input:focus { border-color: var(--accent); }
.input:disabled { opacity: 0.5; }
.input-small { max-width: 250px; flex: 0 0 250px; }

/* ===== LABELS ===== */
.label { color: var(--text); font-size: 14px; white-space: nowrap; }
.label-muted { color: var(--text-muted); font-size: 14px; }
.hint { color: var(--text-muted); font-size: 12px; margin-top: 8px; }

/* ===== CHECKBOX ===== */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #606060;
    cursor: pointer;
}

.checkbox-label input:disabled { opacity: 0.4; }
.checkbox-label:has(input:disabled) { opacity: 0.5; }

/* ===== FORMATS ===== */
.formats-row {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

/* ===== DROP ZONE ===== */
.drop-zone {
    border: 2px dashed var(--border-light);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    margin-top: 12px;
    transition: all 0.2s;
    cursor: pointer;
}

.drop-zone p { color: var(--text-muted); }
.drop-zone-hint { font-size: 12px; margin-top: 4px; }

.drop-zone.dragover {
    border-color: var(--accent);
    background: rgba(61, 126, 255, 0.08);
}

/* ===== FILE LIST ===== */
.file-list {
    margin-top: 12px;
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-input);
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

.file-item:last-child { border-bottom: none; }
.file-item-name { color: var(--text); word-break: break-all; }
.file-item-size { color: var(--text-muted); white-space: nowrap; margin-left: 12px; }
.file-item-remove {
    background: transparent;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 18px;
    padding: 0 4px;
    margin-left: 8px;
}

/* ===== DOWNLOAD PROGRESS ===== */
.download-progress {
    display: flex;
    align-items: center;
    gap: 8px;
}

.progress-bar-small {
    width: 100px;
    height: 18px;
    background: var(--bg-progress);
    border-radius: 9px;
    overflow: hidden;
}

.progress-fill-small {
    height: 100%;
    background: var(--accent);
    border-radius: 9px;
    transition: width 0.3s;
    width: 0%;
}

.progress-text { font-size: 12px; color: var(--text-muted); }

/* ===== PROGRESS CARD ===== */
.progress-card {
    background: #313135;
    border: 1px solid #45454a;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.progress-title { color: #c8c8cc; font-size: 14px; font-weight: 700; }
.progress-counter { color: var(--accent); font-size: 14px; font-weight: 700; }

.progress-bar {
    height: 22px;
    background: var(--bg-progress);
    border-radius: 11px;
    overflow: hidden;
    margin-bottom: 6px;
}

.progress-bar-thin {
    height: 16px;
    margin-top: 4px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-dark));
    border-radius: 11px;
    transition: width 0.5s;
    width: 0%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #f0f0f0;
    font-size: 12px;
    font-weight: 600;
}

.progress-detail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 4px 0;
}

.stage-label { color: #d8d8dc; font-size: 12px; font-weight: 600; }
.current-file { color: #9a9aa0; font-size: 12px; max-width: 400px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.status-label {
    text-align: center;
    padding: 6px;
    margin-top: 6px;
    background: var(--bg-progress);
    border-radius: var(--radius);
    color: #e0e0e0;
    font-size: 13px;
    font-weight: 600;
}

/* ===== LOG PANEL ===== */
.log-panel {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 13px;
    color: var(--text);
    min-height: 400px;
    max-height: 70vh;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

.log-line { padding: 1px 0; }
.log-line-error { color: var(--danger); }
.log-line-success { color: var(--success); }
.log-line-info { color: #7ab7ff; }

/* ===== RESULTS ===== */
.results-list { display: flex; flex-direction: column; gap: 12px; }

.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.result-filename { font-weight: 600; color: #fff; font-size: 15px; }
.result-meta { color: var(--text-muted); font-size: 12px; }

.result-files { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }

.result-file-btn {
    background: #4a4a4d;
    border: 1px solid var(--border-light);
    border-radius: 4px;
    padding: 6px 14px;
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background 0.2s;
}

.result-file-btn:hover { background: #58585b; }

.result-view-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 6px 14px;
    font-size: 13px;
    cursor: pointer;
    transition: background 0.2s;
}

.result-view-btn:hover { background: var(--accent-dark); }

.result-delete-btn {
    background: transparent;
    border: 1px solid var(--danger);
    color: var(--danger);
    border-radius: 4px;
    padding: 6px 14px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.result-delete-btn:hover { background: var(--danger); color: #fff; }

.result-text-preview {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    margin-top: 8px;
    max-height: 300px;
    overflow-y: auto;
    font-family: 'Consolas', monospace;
    font-size: 13px;
    white-space: pre-wrap;
    word-break: break-word;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #6a6a6d; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .main-screen { padding: 8px; }
    .app-header h1 { font-size: 18px; }
    .card { padding: 12px 14px; }
    .row { flex-direction: column; align-items: stretch; }
    .input { min-width: 100%; }
    .formats-row { gap: 12px; }
}