/* File: spelling-number.css */

/* --- THEME DEFINITIONS --- */
body.dark-theme {
    --bg-color: #1a1d21; --surface-color: #2c2f33; --primary-text: #e0e0e0;
    --secondary-text: #a9a9a9; --border-color: #4f545c; --accent-color: #3b82f6;
    --thai-output-bg: #1e293b; --thai-output-border: #3b82f6; --thai-output-text: #93c5fd;
    --eng-output-bg: #162a22; --eng-output-border: #34d399; --eng-output-text: #6ee7b7;
}
body.light-theme {
    --bg-color: #f1f5f9; --surface-color: #ffffff; --primary-text: #1e293b;
    --secondary-text: #64748b; --border-color: #e2e8f0; --accent-color: #2563eb;
    --thai-output-bg: #eff6ff; --thai-output-border: #bfdbfe; --thai-output-text: #1d4ed8;
    --eng-output-bg: #f0fdf4; --eng-output-border: #a7f3d0; --eng-output-text: #15803d;
}

/* --- Base Styling --- */
body {
    margin: 0; font-family: 'Sarabun', 'Kanit', sans-serif; background-color: var(--bg-color);
    color: var(--primary-text); display: flex; justify-content: center; align-items: center;
    min-height: 100vh; padding: 1rem; box-sizing: border-box; transition: background-color 0.3s, color 0.3s;
}

/* --- Theme Toggle Button --- */
#theme-toggle {
    position: fixed; top: 20px; right: 20px; background: var(--surface-color); border: 1px solid var(--border-color);
    color: var(--primary-text); width: 40px; height: 40px; border-radius: 50%;
    cursor: pointer; font-size: 18px; display: flex; justify-content: center;
    align-items: center; z-index: 1000; transition: all 0.3s;
}
#theme-toggle:hover { transform: scale(1.1); }

/* --- Layout --- */
.container { width: 100%; max-width: 48rem; margin: 0 auto; }
.main-card {
    background-color: var(--surface-color); border-radius: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1); padding: 2rem;
    border: 1px solid var(--border-color); transition: padding 0.3s, border-radius 0.3s;
}
body.dark-theme .main-card { box-shadow: 0 10px 15px -3px rgba(0,0,0,0.2); }

/* --- Header --- */
.page-header { text-align: center; margin-bottom: 2rem; }
.page-header h1 { font-size: 2.25rem; font-weight: 700; color: var(--primary-text); transition: font-size 0.3s; }
.page-header p { color: var(--secondary-text); margin-top: 0.5rem; }

/* --- Input Section --- */
.input-section label { display: block; font-weight: 500; margin-bottom: 0.5rem; color: var(--secondary-text); }
.input-section input {
    width: 100%; padding: 0.75rem 1rem; font-size: 1.125rem; border: 2px solid var(--border-color);
    background-color: var(--bg-color); color: var(--primary-text); border-radius: 0.5rem;
    transition: all 0.2s; box-sizing: border-box;
}
.input-section input:focus {
    outline: none; border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.4);
}
body.dark-theme .input-section input:focus { box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3); }

/* --- Output Section --- */
.output-wrapper { margin-top: 2rem; display: flex; flex-direction: column; gap: 1.5rem; }
.output-group h2 {
    font-size: 1.25rem; font-weight: 700; margin-bottom: 0.5rem;
    display: flex; align-items: center; gap: 0.5rem; color: var(--primary-text);
}
.output-box {
    padding: 1rem; border-radius: 0.5rem; border: 1px solid;
    min-height: 60px; font-size: 1.125rem; display: flex; align-items: center;
    word-break: break-all; transition: font-size 0.3s;
}
.output-box.style-thai {
    background-color: var(--thai-output-bg); border-color: var(--thai-output-border); color: var(--thai-output-text);
}
.output-box.style-eng {
    background-color: var(--eng-output-bg); border-color: var(--eng-output-border); color: var(--eng-output-text);
}

/* --- Responsive Adjustments --- */
@media (max-width: 640px) {
    body { padding: 0; align-items: flex-start; }
    .container { padding: 0; }
    .main-card {
        padding: 1.5rem 1rem; border-radius: 0; border-left: none;
        border-right: none; box-shadow: none;
    }
    body.dark-theme .main-card { border-bottom: 1px solid var(--border-color); }
    .page-header h1 { font-size: 1.875rem; }
    .output-box { font-size: 1rem; min-height: 50px; }
}

.footer-link { text-align: center; }
.footer-link a { color: var(--secondary-text); text-decoration: none; font-size: 0.875rem; }
.footer-link a:hover { text-decoration: underline; }