:root {
    --bg: #0f172a;
    --bg-soft: #111827;
    --panel: rgba(15, 23, 42, 0.85);
    --panel-border: rgba(148, 163, 184, 0.18);
    --primary: #60a5fa;
    --primary-strong: #2563eb;
    --primary-soft: rgba(96, 165, 250, 0.12);
    --text: #e2e8f0;
    --muted: #94a3b8;
    --success: #22c55e;
    --shadow: 0 20px 45px rgba(15, 23, 42, 0.4);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #020817 0%, #0f172a 42%, #111827 100%);
    color: var(--text);
}

.page {
    width: min(100%, 980px);
    padding: 32px 20px;
}

.card {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 22px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(8px);
    overflow: hidden;
}

.hero {
    padding: 42px 38px 24px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.18), rgba(14, 116, 144, 0.08));
    border-bottom: 1px solid var(--panel-border);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(96, 165, 250, 0.1);
    border: 1px solid rgba(96, 165, 250, 0.25);
    color: #bfdbfe;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-weight: 700;
}

h1 {
    margin: 16px 0 12px;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.1;
    letter-spacing: -0.04em;
}

.subtitle {
    margin: 0;
    max-width: 620px;
    color: var(--muted);
    font-size: 1.02rem;
    line-height: 1.7;
}

.content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 24px;
    padding: 30px 38px 38px;
}

.panel {
    background: rgba(15, 23, 42, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.12);
    border-radius: 18px;
    padding: 24px;
}

.upload-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

label {
    font-size: 0.95rem;
    font-weight: 600;
    color: #dbeafe;
}

.file-upload {
    position: relative;
    display: block;
    width: 100%;
    border: 1.5px dashed rgba(96, 165, 250, 0.7);
    border-radius: 18px;
    background: rgba(96, 165, 250, 0.05);
    padding: 28px 20px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.file-upload:hover {
    background: rgba(96, 165, 250, 0.08);
    border-color: rgba(96, 165, 250, 1);
    transform: translateY(-1px);
}

.file-upload input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-align: center;
}

.upload-icon {
    width: 56px;
    height: 56px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    background: rgba(96, 165, 250, 0.12);
    font-size: 1.7rem;
}

.upload-title {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
}

.upload-note {
    margin: 0;
    color: var(--muted);
    font-size: 0.88rem;
}

.file-name {
    min-height: 24px;
    font-size: 0.92rem;
    color: #bfdbfe;
    word-break: break-all;
}

button {
    appearance: none;
    border: none;
    border-radius: 12px;
    padding: 16px 18px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-strong) 100%);
    color: white;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.35);
}

button:hover {
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

.info-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 12px;
}

.info-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--muted);
    line-height: 1.6;
}

.info-list li strong {
    color: var(--text);
}

.info-list .dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-top: 8px;
    background: linear-gradient(135deg, #34d399, #22c55e);
    box-shadow: 0 0 12px rgba(34, 197, 94, 0.8);
}

@media (max-width: 760px) {
    .content {
        grid-template-columns: 1fr;
    }

    .hero,
    .content {
        padding-left: 20px;
        padding-right: 20px;
    }
}