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

:root {
    --bg: #0d0f14;
    --surface: #13161d;
    --border: #1f2430;
    --accent: #00e5a0;
    --accent-dim: rgba(0, 229, 160, 0.08);
    --text: #e2e8f0;
    --muted: #5a6478;
    --mono: 'Space Mono', monospace;
    --sans: 'DM Sans', sans-serif;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    min-height: 100vh;
    padding: 3rem 1.5rem;
    background-image:
        radial-gradient(ellipse 60% 40% at 80% 10%, rgba(0,229,160,0.06) 0%, transparent 60%),
        radial-gradient(ellipse 50% 30% at 10% 80%, rgba(0,150,255,0.05) 0%, transparent 60%);
}

.container {
    max-width: 680px;
    margin: 0 auto;
}

/* --- Header --- */
.header {
    margin-bottom: 3.5rem;
    animation: fadeDown 0.6s ease both;
}

.header .badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid rgba(0,229,160,0.2);
    padding: 0.3rem 0.75rem;
    border-radius: 2px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.header .badge::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.header h1 {
    font-family: var(--mono);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: #fff;
}

.header h1 span { color: var(--accent); }

.header p {
    margin-top: 0.75rem;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 300;
}

/* --- Sections --- */
.section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    animation: fadeUp 0.5s ease both;
    position: relative;
    overflow: hidden;
}

.section::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px; height: 100%;
    background: var(--accent);
}

.section:nth-child(2) { animation-delay: 0.1s; }
.section:nth-child(3) { animation-delay: 0.2s; }

.section-label {
    font-family: var(--mono);
    font-size: 0.65rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.section h2 {
    font-size: 1.1rem;
    font-weight: 500;
    color: #fff;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

/* --- File input --- */
.file-zone {
    border: 1.5px dashed var(--border);
    border-radius: 4px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    position: relative;
}

.file-zone:hover {
    border-color: var(--accent);
    background: var(--accent-dim);
}

.file-zone input[type="file"] {
    position: absolute; inset: 0;
    opacity: 0; cursor: pointer; width: 100%; height: 100%;
}

.file-zone .icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    display: block;
    opacity: 0.5;
}

.file-zone p {
    font-size: 0.85rem;
    color: var(--muted);
}

.file-zone p strong {
    color: var(--accent);
    font-weight: 500;
}

/* --- Signature textarea --- */
.sig-label {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin: 1.25rem 0 0.5rem;
}

textarea {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.78rem;
    padding: 1rem;
    resize: vertical;
    min-height: 100px;
    transition: border-color 0.2s;
    line-height: 1.6;
}

textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0,229,160,0.08);
}

/* --- Form fields --- */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.field.full { grid-column: 1 / -1; }

label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

input[type="text"],
input[type="email"],
input[type="number"] {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-family: var(--sans);
    font-size: 0.9rem;
    padding: 0.65rem 0.9rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    width: 100%;
}

input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0,229,160,0.08);
}

input::placeholder { color: var(--muted); opacity: 0.5; }

.btn {
    margin-top: 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent);
    color: #0d0f14;
    font-family: var(--mono);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
}

.btn:hover { opacity: 0.85; }
.btn:active { transform: scale(0.98); }

/* --- Animations --- */
@keyframes fadeDown {
    from { opacity: 0; transform: translateY(-16px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.3; }
}

@media (max-width: 480px) {
    .form-grid { grid-template-columns: 1fr; }
}