/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    min-height: 100vh;
    font-family: 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
    background-color: #e9e9e9;
    transition: background-color 0.3s;
    color: #333;
}

body[data-theme="dark"] { background-color: #1a1a2e; color: #e0e0e0; }

/* === Page outer: centering wrapper === */
.page-outer {
    display: flex;
    justify-content: center;
    padding: 2rem 1rem 4rem;
}

/* === Page wrapper: main content column === */
.page-wrapper {
    width: 100%;
    max-width: 520px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Tablet */
@media (min-width: 640px) {
    .page-outer { padding: 2.5rem 1.5rem 4rem; }
}

/* Desktop */
@media (min-width: 960px) {
    .page-outer  { padding: 3rem 2rem 5rem; }
    .page-wrapper { max-width: 1020px; }
}

/* === Site header === */
.site-header {
    text-align: center;
    padding: 0.5rem 0;
}

.site-title {
    font-size: 2rem;
    font-weight: 900;
    color: #333;
    transition: color 0.3s;
}

body[data-theme="dark"] .site-title { color: #e0e0e0; }

.site-desc {
    font-size: 0.9rem;
    color: #888;
    margin-top: 0.3rem;
}

body[data-theme="dark"] .site-desc { color: #aaa; }

/* === Language toggle === */
.lang-toggle {
    display: inline-block;
    margin-top: 0.6rem;
    padding: 0.3rem 0.9rem;
    border: 1.5px solid #bbb;
    border-radius: 20px;
    background: none;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    color: #666;
    transition: border-color 0.2s, color 0.2s;
}

.lang-toggle:hover { border-color: #667eea; color: #667eea; }
body[data-theme="dark"] .lang-toggle { color: #bbb; border-color: #555; }
body[data-theme="dark"] .lang-toggle:hover { border-color: #9a8fd8; color: #9a8fd8; }

/* === Tools grid: 1-col mobile → 2-col desktop === */
.tools-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    width: 100%;
}

@media (min-width: 960px) {
    .tools-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
        align-items: start;
    }
}

.tool-col {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

/* === Animal banner === */
.animal-banner {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 14px;
    padding: 1.2rem 1.4rem;
    text-decoration: none;
    color: white;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.4);
    transition: transform 0.15s, box-shadow 0.15s;
}

.animal-banner:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.55);
}

.animal-banner:active { transform: scale(0.98); }

.animal-banner-icons { font-size: 1.8rem; letter-spacing: 0.1rem; flex-shrink: 0; }

.animal-banner-text { display: flex; flex-direction: column; gap: 0.2rem; flex: 1; }
.animal-banner-text strong { font-size: 1.05rem; font-weight: 800; }
.animal-banner-text span   { font-size: 0.82rem; opacity: 0.85; }

.animal-banner-arrow { font-size: 1.3rem; opacity: 0.8; flex-shrink: 0; }

/* === Content description sections === */
.content-section {
    width: 100%;
    background-color: #f0f0f0;
    border-radius: 12px;
    padding: 1.4rem 1.6rem;
    transition: background-color 0.3s;
}

body[data-theme="dark"] .content-section { background-color: #16213e; }

.section-title {
    font-size: 1rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

body[data-theme="dark"] .section-title { color: #ddd; }

.section-text {
    font-size: 0.88rem;
    color: #666;
    line-height: 1.75;
    transition: color 0.3s;
}

body[data-theme="dark"] .section-text { color: #aaa; }

/* === Contact section === */
.contact-section {
    width: 100%;
    background-color: #f0f0f0;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.07);
    transition: background-color 0.3s, color 0.3s;
}

body[data-theme="dark"] .contact-section {
    background-color: #16213e;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}

/* On desktop, center the contact form */
@media (min-width: 960px) {
    .contact-section {
        max-width: 640px;
        margin: 0 auto;
        width: 100%;
    }
}

.contact-section h2 {
    margin: 0 0 1.5rem;
    font-size: 1.4rem;
    color: #333;
    transition: color 0.3s;
}

body[data-theme="dark"] .contact-section h2 { color: #e0e0e0; }

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 1.1rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: bold;
    margin-bottom: 0.4rem;
    color: #555;
    transition: color 0.3s;
}

body[data-theme="dark"] .form-group label { color: #aaa; }

.form-group input,
.form-group textarea {
    padding: 0.65rem 0.85rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background-color: #fff;
    color: #333;
    transition: border-color 0.2s, background-color 0.3s, color 0.3s;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus { border-color: #667eea; }

body[data-theme="dark"] .form-group input,
body[data-theme="dark"] .form-group textarea {
    background-color: #0f3460;
    border-color: #2a4a7f;
    color: #e0e0e0;
}

body[data-theme="dark"] .form-group input::placeholder,
body[data-theme="dark"] .form-group textarea::placeholder { color: #7a9cc0; }

.submit-btn {
    width: 100%;
    padding: 0.85rem;
    font-size: 1.05rem;
    font-weight: bold;
    cursor: pointer;
    border: none;
    border-radius: 8px;
    background-color: #4CAF50;
    color: white;
    transition: background-color 0.3s;
}

.submit-btn:hover:not(:disabled) { background-color: #45a049; }
.submit-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.form-status {
    margin: 0.75rem 0 0;
    font-size: 0.9rem;
    text-align: center;
    min-height: 1.2em;
}

.form-status.success { color: #4CAF50; }
.form-status.error   { color: #e53935; }

/* === Disqus section === */
.disqus-section {
    width: 100%;
    background-color: #f0f0f0;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.07);
    transition: background-color 0.3s;
}

body[data-theme="dark"] .disqus-section {
    background-color: #16213e;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}

/* === Footer === */
.site-footer {
    width: 100%;
    padding: 1.2rem 1rem 0.5rem;
    text-align: center;
    font-size: 0.82rem;
    color: #aaa;
}

.footer-nav {
    margin-top: 0.4rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.6rem;
}

.footer-nav a { color: #888; text-decoration: none; }
.footer-nav a:hover { color: #555; text-decoration: underline; }
.footer-nav span { color: #ccc; }