* {
    box-sizing: border-box;
}

:root {
    --bg-1: #07111f;
    --bg-2: #123024;
    --panel: rgba(11, 20, 34, 0.82);
    --panel-border: rgba(255, 255, 255, 0.12);
    --text: #eef5ef;
    --muted: #a8b8ae;
    --accent: #8ad26a;
    --accent-2: #ffd166;
    --danger: #ff6b6b;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", "Trebuchet MS", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(138, 210, 106, 0.22), transparent 34%),
        radial-gradient(circle at top right, rgba(255, 209, 102, 0.16), transparent 30%),
        linear-gradient(145deg, var(--bg-1), var(--bg-2));
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: auto;
    pointer-events: none;
    border-radius: 999px;
    filter: blur(20px);
    opacity: 0.55;
}

body::before {
    width: 260px;
    height: 260px;
    top: -80px;
    left: -70px;
    background: rgba(138, 210, 106, 0.22);
}

body::after {
    width: 320px;
    height: 320px;
    bottom: -100px;
    right: -120px;
    background: rgba(255, 209, 102, 0.14);
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.brand-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-dot {
    width: 11px;
    height: 11px;
    border-radius: 999px;
    background: var(--accent);
    box-shadow: 0 0 16px rgba(138, 210, 106, 0.8);
}

.brand-name {
    margin: 0;
    font-size: 1.05rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #d7e8da;
}

.brand-subtitle {
    margin: 0;
    font-size: 0.94rem;
    color: var(--muted);
}

.page-shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 40px 0 48px;
}

.hero-card {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 24px;
    align-items: stretch;
}

.hero-copy,
.upload-card,
.result-card {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 26px;
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
    backdrop-filter: blur(16px);
}

.hero-copy {
    padding: 36px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    animation: slideUp 0.6s ease both;
}

.eyebrow {
    margin: 0 0 12px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--accent);
    font-size: 0.78rem;
}

h1 {
    margin: 0;
    font-size: clamp(2.3rem, 4vw, 4.4rem);
    line-height: 0.98;
    max-width: 11ch;
}

.lede {
    margin: 18px 0 0;
    max-width: 58ch;
    color: var(--muted);
    font-size: 1.04rem;
    line-height: 1.7;
}

.meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 26px;
}

.meta-pill {
    display: inline-flex;
    align-items: center;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.09);
    color: var(--text);
    font-size: 0.92rem;
}

.upload-card {
    padding: 22px;
    animation: slideUp 0.75s ease both;
}

.upload-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    height: 100%;
}

.dropzone {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 180px;
    border-radius: 22px;
    border: 1.5px dashed rgba(138, 210, 106, 0.45);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
    cursor: pointer;
    overflow: hidden;
}

.dropzone:hover {
    border-color: rgba(138, 210, 106, 0.8);
}

.dropzone-active {
    border-color: rgba(138, 210, 106, 0.92);
    box-shadow: inset 0 0 0 1px rgba(138, 210, 106, 0.62), 0 0 0 4px rgba(138, 210, 106, 0.08);
}

.dropzone input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.dropzone-copy {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
    padding: 20px;
}

.dropzone-title {
    font-size: 1.1rem;
    font-weight: 700;
}

.dropzone-badge {
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 999px;
    padding: 7px 12px;
    margin-top: 6px;
}

.dropzone-subtitle,
.file-name,
.support-text,
.result-text {
    color: var(--muted);
}

.preview-panel {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.preview-frame {
    position: relative;
    min-height: 220px;
    border-radius: 20px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.preview-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.preview-placeholder {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: var(--muted);
}

.hidden {
    display: none !important;
}

.file-name {
    margin: 0;
    font-size: 0.95rem;
    word-break: break-word;
}

.primary-btn {
    width: 100%;
    border: none;
    border-radius: 16px;
    padding: 15px 18px;
    background: linear-gradient(135deg, var(--accent), #5ca86f);
    color: #06130d;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 14px 30px rgba(138, 210, 106, 0.22);
}

.primary-btn:hover {
    filter: brightness(1.03);
}

.primary-btn:disabled {
    opacity: 0.85;
    cursor: not-allowed;
}

.tip-card {
    margin-top: 24px;
    padding: 16px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.tip-title {
    margin: 0;
    font-weight: 700;
    color: #d8f0cc;
}

.tip-list {
    margin: 10px 0 0;
    padding-left: 18px;
    color: var(--muted);
    line-height: 1.7;
}

.result-grid {
    margin-top: 24px;
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.result-card {
    padding: 24px;
    animation: slideUp 0.85s ease both;
}

.result-label {
    margin: 0 0 8px;
    color: var(--accent-2);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.78rem;
}

.result-card h2 {
    margin: 0;
    font-size: 1.7rem;
}

.result-text,
.support-text {
    margin: 10px 0 0;
    line-height: 1.6;
}

.success {
    border-color: rgba(138, 210, 106, 0.35);
}

.error-card {
    border-color: rgba(255, 107, 107, 0.4);
}

.error-card .result-label {
    color: var(--danger);
}

.neutral-card {
    border-color: rgba(255, 255, 255, 0.14);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 900px) {
    .hero-card {
        grid-template-columns: 1fr;
    }

    .hero-copy {
        padding: 28px;
    }

    .topbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}

@media (max-width: 640px) {
    .page-shell {
        width: min(100% - 20px, 100%);
        padding-top: 18px;
    }

    .hero-copy,
    .upload-card,
    .result-card {
        border-radius: 20px;
    }

    h1 {
        max-width: none;
    }

    .preview-frame {
        min-height: 180px;
    }
}