@import url('https://fonts.googleapis.com/css2?family=Red+Hat+Text:wght@400;500;600;700&family=Teko:wght@500;600&display=swap');

:root {
    --bg: #f7f7f8;
    --bg-strong: #fff6f6;
    --text: #474747;
    --muted: #777777;
    --border: #e7e7e7;
    --shadow: 0 18px 55px rgba(20, 20, 20, 0.08);
    --card: #ffffff;
    --accent: #a52431;
    --accent-strong: #8d1e2a;
    --accent-soft: #f8e5e8;
    --highlight: #ffd62f;
    --danger: #a52431;
}

body {
    margin: 0;
    font-family: "Red Hat Text", "Segoe UI", system-ui, -apple-system, sans-serif;
    background: radial-gradient(120% 120% at 6% 12%, var(--bg-strong) 0%, #fffdf7 45%, var(--bg) 85%);
    color: var(--text);
    line-height: 1.5;
}

.main-layout {
    min-height: 100vh;
}

.top-bar {
    display: flex;
    align-items: center;
    padding: 14px 24px;
    background: var(--accent);
    border-bottom: 1px solid var(--accent-strong);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    color: #ffd62f;
}

.top-bar .brand {
    font-family: "Teko", "Red Hat Text", sans-serif;
    font-weight: 600;
    letter-spacing: 0.6px;
    color: #ffd62f;
}

.content {
    padding: 28px 32px 40px;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
}

h1 {
    margin: 0 0 10px;
    letter-spacing: 0.2px;
    font-family: "Teko", "Red Hat Text", sans-serif;
    font-weight: 600;
}

.controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 14px;
    justify-content: center;
}

.btn {
    background: #4a4a4a;
    color: #ffffff;
    border: 1px solid #404040;
    padding: 10px 15px;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease, background-color 120ms ease;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.btn:hover:not(:disabled) {
    transform: translateY(-1px);
    background: #3f3f3f;
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    box-shadow: none;
}

.btn.secondary {
    background: #f4f4f4;
    color: #474747;
    border: 1px solid #d3d3d3;
    box-shadow: none;
}

.btn.secondary:hover:not(:disabled) {
    background: #e9e9e9;
    transform: translateY(-1px);
}

.drop-hint {
    padding: 26px;
    border: 1px dashed var(--border);
    border-radius: 14px;
    text-align: center;
    color: var(--muted);
    background: #ffffff;
    width: min(1100px, 100%);
    margin: 0 auto;
    box-shadow: 0 8px 18px rgba(165, 36, 49, 0.06);
}

.error-banner {
    margin-top: 10px;
    padding: 12px 14px;
    border-radius: 10px;
    background: #fcebec;
    border: 1px solid #f3c6cd;
    color: var(--accent-strong);
}

.document-shell {
    position: relative;
    margin-top: 14px;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--card);
    border: 1px solid var(--border);
    margin-left: auto;
    margin-right: auto;
}

canvas {
    display: block;
    width: 100%;
    height: auto;
    background: #ffffff;
}

.overlay {
    position: absolute;
    border: 1px dashed var(--accent);
    border-radius: 10px;
    padding: 8px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 12px 30px rgba(165, 36, 49, 0.15);
    user-select: none;
    touch-action: none;
}

.overlay.signature img {
    display: block;
    max-width: 100%;
    max-height: 100%;
}

.overlay-controls {
    position: absolute;
    top: -44px;
    right: 0;
    display: flex;
    gap: 6px;
}

.overlay-btn {
    background: #ffffff;
    color: var(--accent-strong);
    border: 1px solid var(--accent);
    border-radius: 8px;
    padding: 6px 10px;
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(165, 36, 49, 0.16);
}

.overlay-input {
    border: 1px solid var(--border);
    background: #ffffff;
    color: var(--text);
    font-size: 18px;
    padding: 6px 8px;
    min-width: 180px;
    border-radius: 8px;
    outline: none;
}

.paging {
    margin-top: 14px;
    display: flex;
    gap: 10px;
    align-items: center;
    color: var(--muted);
}

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.35);
    backdrop-filter: blur(3px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
    min-width: 760px;
    box-shadow: var(--shadow);
}

.modal-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
    color: var(--muted);
}

.modal canvas {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 10px;
}

.spacer {
    flex: 1;
}