:root {
    --bg: #f4f5f7;
    --card-bg: #ffffff;
    --text: #1f2330;
    --muted: #7a7f8c;
    --accent: #4361ee;
    --accent-hover: #324bd6;
    --danger: #e63946;
    --danger-hover: #c92e3a;
    --border: #e7e9ee;
    --radius: 18px;
    --shadow: 0 8px 30px rgba(20, 20, 43, 0.06);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Segoe UI', 'Hind Siliguri', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

.wrapper {
    max-width: 1000px;
    margin: 0 auto;
    padding: 32px 20px 60px;
}

/* ---------- Topbar ---------- */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 16px;
}

.logo {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--text);
    text-decoration: none;
}

.logo span { color: var(--accent); }

.nav-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.nav-links a, .btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 11px 22px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text);
    cursor: pointer;
    transition: all 0.15s ease;
}

.nav-links a:hover, .btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-primary {
    background: var(--accent);
    color: #fff !important;
    border-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn-danger {
    background: var(--danger);
    color: #fff !important;
    border-color: var(--danger);
}

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

/* ---------- Card / Room ---------- */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px;
    margin-bottom: 28px;
}

.card h1, .card h2 {
    margin-top: 0;
}

.card h1 {
    font-size: 28px;
    font-weight: 700;
}

.card h2 {
    font-size: 20px;
    font-weight: 700;
}

.subtitle {
    color: var(--muted);
    font-size: 15px;
    margin-bottom: 28px;
}

/* ---------- Upload Box ---------- */
.dropzone {
    border: 2.5px dashed #cdd2dd;
    border-radius: var(--radius);
    padding: 60px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: #fafbfc;
}

.dropzone.dragover, .dropzone:hover {
    border-color: var(--accent);
    background: #f0f3ff;
}

.dropzone .icon {
    font-size: 48px;
    margin-bottom: 14px;
}

.dropzone .main-text {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
}

.dropzone .sub-text {
    color: var(--muted);
    font-size: 14px;
}

input[type="file"] { display: none; }

/* ---------- Progress ---------- */
.progress-wrap {
    margin-top: 22px;
    display: none;
}

.progress-bar-bg {
    width: 100%;
    background: #eef0f4;
    border-radius: 50px;
    height: 12px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), #6c8cff);
    border-radius: 50px;
    transition: width 0.2s ease;
}

.progress-label {
    margin-top: 8px;
    font-size: 13px;
    color: var(--muted);
    text-align: center;
}

/* ---------- Result Box ---------- */
.result-box {
    margin-top: 28px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    display: none;
    background: #fafbfc;
}

.result-box.show { display: block; }

.result-grid {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
    align-items: flex-start;
}

.qr-box {
    text-align: center;
    flex-shrink: 0;
}

.qr-box img {
    width: 220px;
    height: 220px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
    padding: 12px;
}

.qr-box a {
    display: block;
    margin-top: 12px;
}

.result-info {
    flex: 1;
    min-width: 220px;
}

.result-info .filename {
    font-weight: 700;
    font-size: 17px;
    margin-bottom: 6px;
    word-break: break-all;
}

.result-info .filemeta {
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 18px;
}

.link-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.link-row input {
    flex: 1;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    font-size: 14px;
    background: #fff;
    color: var(--text);
}

/* ---------- Login Page ---------- */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-card {
    width: 100%;
    max-width: 420px;
    text-align: center;
}

.login-card .icon-circle {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: #eef1ff;
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin: 0 auto 20px;
}

.login-card input[type="password"] {
    width: 100%;
    padding: 16px 18px;
    font-size: 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    margin-bottom: 16px;
    text-align: center;
    letter-spacing: 2px;
}

.login-card button {
    width: 100%;
    padding: 16px;
    font-size: 16px;
}

.error-msg {
    background: #ffeef0;
    color: var(--danger);
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 18px;
    font-size: 14px;
}

/* ---------- Table / Hosting Manager ---------- */
.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th, td {
    text-align: left;
    padding: 14px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

th {
    color: var(--muted);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tr:last-child td { border-bottom: none; }

.file-cell {
    display: flex;
    align-items: center;
    gap: 12px;
}

.thumb {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    object-fit: cover;
    background: #eef0f4;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--muted);
}

.file-name {
    font-weight: 600;
    word-break: break-all;
}

.file-link {
    color: var(--accent);
    text-decoration: none;
    font-size: 13px;
}

.action-btns {
    display: flex;
    gap: 8px;
}

.icon-btn {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    text-decoration: none;
    cursor: pointer;
    font-size: 16px;
}

.icon-btn:hover { border-color: var(--accent); color: var(--accent); }

.icon-btn.danger:hover { border-color: var(--danger); color: var(--danger); }

.empty-state {
    text-align: center;
    color: var(--muted);
    padding: 60px 20px;
}

.empty-state .icon { font-size: 50px; margin-bottom: 14px; }

.stat-row {
    display: flex;
    gap: 20px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.stat-box {
    flex: 1;
    min-width: 140px;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    text-align: center;
}

.stat-box .num {
    font-size: 30px;
    font-weight: 800;
    color: var(--accent);
}

.stat-box .label {
    color: var(--muted);
    font-size: 13px;
    margin-top: 6px;
}

@media (max-width: 640px) {
    .card { padding: 24px; }
    .dropzone { padding: 40px 16px; }
    .result-grid { flex-direction: column; align-items: center; }
}