@import url("https://fonts.googleapis.com/css2?family=Sora:wght@300;400;600;700&display=swap");

:root {
    --orange-soft: #f7a24b;
    --orange-strong: #f07a1f;
    --orange-deep: #d85a12;
    --cream: #fff4e6;
    --text-dark: #2f1c0e;
    --panel: #fffaf4;
    --shadow: 0 20px 50px rgba(240, 122, 31, 0.18);
}

body {
    font-family: "Sora", "Trebuchet MS", sans-serif;
    background: radial-gradient(circle at top left, #fff2e4 0%, #fff7ef 40%, #fffdf9 100%);
    color: var(--text-dark);
    min-height: 100vh;
}

.tool-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 90px 24px 80px;
    min-height: calc(100vh - 200px);
}

.tool-card {
    background: #fff;
    border-radius: 24px;
    box-shadow: var(--shadow);
    border: 1px solid #ffe0c2;
    max-width: 560px;
    width: 100%;
    padding: 48px 40px;
}

.tool-card h1 {
    color: var(--text-dark);
    margin-bottom: 6px;
    text-align: center;
    font-size: 28px;
    font-weight: 700;
}

.tool-subtitle {
    text-align: center;
    color: #8a6550;
    margin-bottom: 32px;
    font-size: 14px;
}

.upload-area {
    border: 2px dashed var(--orange-soft);
    border-radius: 14px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--panel);
    margin-bottom: 24px;
}

.upload-area:hover {
    border-color: var(--orange-strong);
    background: #fff0de;
}

.upload-area.dragover {
    border-color: var(--orange-deep);
    background: #ffe8cc;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 10px;
}

.upload-text {
    color: var(--text-dark);
    margin-bottom: 5px;
    opacity: 0.85;
}

.upload-text strong {
    color: var(--orange-strong);
}

.upload-hint {
    color: #b09888;
    font-size: 12px;
    margin-top: 10px;
}

#file-input {
    display: none;
}

.file-info-box {
    background: var(--panel);
    border: 1px solid #ffd9b3;
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 24px;
    display: none;
}

.file-info-box.show {
    display: block;
}

.file-name-text {
    font-weight: 600;
    color: var(--text-dark);
    word-break: break-all;
}

.file-size-text {
    color: #8a6550;
    font-size: 13px;
    margin-top: 5px;
}

.btn-convert {
    width: 100%;
    padding: 14px;
    background: var(--orange-strong);
    color: white;
    border: none;
    border-radius: 999px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
    display: none;
    box-shadow: 0 12px 28px rgba(240, 122, 31, 0.3);
}

.btn-convert.show {
    display: block;
}

.btn-convert:hover {
    background: var(--orange-deep);
    transform: translateY(-1px);
    box-shadow: 0 16px 36px rgba(240, 122, 31, 0.35);
}

.btn-convert:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-convert:active {
    transform: translateY(0);
}

.message {
    padding: 12px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: none;
}

.message.show {
    display: block;
}

.message.error {
    background: #fff0ee;
    color: #c33;
    border: 1px solid #fcc;
}

.message.success {
    background: #eef9ee;
    color: #2a7d2a;
    border: 1px solid #b8e6b8;
}

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.result-box {
    background: var(--panel);
    border: 1px solid #ffd9b3;
    padding: 24px;
    border-radius: 14px;
    text-align: center;
    margin-bottom: 20px;
    display: none;
}

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

.result-title {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 18px;
    margin-bottom: 8px;
}

.result-size {
    color: #8a6550;
    font-size: 14px;
    margin-bottom: 16px;
}

.btn-download {
    display: inline-block;
    padding: 12px 24px;
    background: var(--orange-strong);
    color: white;
    text-decoration: none;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 700;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 10px 24px rgba(240, 122, 31, 0.25);
}

.btn-download:hover {
    background: var(--orange-deep);
    transform: translateY(-1px);
}

.btn-new {
    width: 100%;
    padding: 12px;
    background: #fff;
    color: var(--orange-strong);
    border: 1px solid #ffd1a1;
    border-radius: 999px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: background 0.2s, color 0.2s;
}

.btn-new:hover {
    background: var(--orange-soft);
    color: #fff;
}

@media (max-width: 600px) {
    .tool-card {
        padding: 32px 20px;
    }

    .tool-card h1 {
        font-size: 24px;
    }
}