/* Section: Base Typography and Variables */
@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/Vazirmatn.woff2') format('woff2');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

:root {
    --bg-color: #f8f6f2;
    --text-color: #1a1a1a;
    --text-muted: #333333;
    --card-bg: #ffffff;
    --border-color: #1a1a1a;
    --shadow-color: #1a1a1a;
    
    --drop-bg: #c3f0ca;
    --drop-hover: #aae0b3;
    --pastel-yellow: #fff4bd;
    --pastel-blue: #b3d9ff;
    
    --btn-main: #ff90e8;
    --btn-danger: #ff6b6b;
    --btn-icon: #c3f0ca;
    --overlay-bg: rgba(0, 0, 0, 0.75);
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #f8f6f2;
    --text-muted: #cccccc;
    --card-bg: #222222;
    --border-color: #f8f6f2;
    --shadow-color: #f8f6f2;
    
    --drop-bg: #1c3621;
    --drop-hover: #264a2d;
    --pastel-yellow: #3d3714;
    --pastel-blue: #162433;
    
    --btn-main: #964284;
    --btn-danger: #8a2a2a;
    --btn-icon: #1c3621;
    --overlay-bg: rgba(0, 0, 0, 0.85);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Vazirmatn', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    padding: 30px 20px;
    display: flex;
    justify-content: center;
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

.app-wrapper {
    width: 100%;
    max-width: 800px;
}

/* Section: Header and Controls */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    text-align: start;
}

.header-titles h1 {
    font-size: 2.8rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -1px;
}

.header-titles p {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-muted);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.theme-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    padding: 0;
    background-color: var(--card-bg);
    color: var(--text-color);
}

.lang-switcher {
    display: flex;
    background: var(--card-bg);
    border: 4px solid var(--border-color);
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 4px 4px 0px var(--shadow-color);
    transition: all 0.3s;
}

.lang-btn {
    background: transparent;
    border: none;
    box-shadow: none;
    border-radius: 0;
    padding: 10px 20px;
    font-weight: 900;
    font-size: 1rem;
    color: var(--text-color);
    transition: background 0.2s, color 0.2s;
}

.lang-btn:active {
    transform: none;
    box-shadow: none;
}

.lang-btn.active {
    background: var(--text-color);
    color: var(--bg-color);
}

/* Section: Main Cards and Grid */
.config-card, .result-item {
    background: var(--card-bg);
    border: 4px solid var(--border-color);
    border-radius: 20px;
    box-shadow: 8px 8px 0px var(--shadow-color);
    transition: transform 0.1s ease, box-shadow 0.3s, background-color 0.3s;
}

.drop-card {
    background-color: var(--drop-bg);
    border: 5px dashed var(--border-color); 
    border-radius: 20px;
    padding: 50px 20px;
    text-align: center;
    cursor: pointer;
    margin-bottom: 35px;
    transition: all 0.2s ease;
}

.drop-card:hover { 
    background-color: var(--drop-hover); 
}

.drop-inner h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-top: 15px;
}

.drop-inner p {
    font-weight: 600;
    color: var(--text-muted);
}

.config-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-bottom: 35px;
}

.config-card { padding: 25px; }

.config-card header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 900;
    margin-bottom: 20px;
    font-size: 1.2rem;
    border-bottom: 3px solid var(--border-color);
    padding-bottom: 10px;
}

.pastel-yellow { background-color: var(--pastel-yellow); }
.pastel-blue { background-color: var(--pastel-blue); }

.field { margin-bottom: 18px; text-align: start; }
label { display: block; font-weight: 800; margin-bottom: 8px; font-size: 0.95rem;}

select, input[type="number"] {
    width: 100%;
    padding: 14px;
    border: 3px solid var(--border-color);
    border-radius: 12px;
    font-weight: 700;
    outline: none;
    background: var(--card-bg);
    color: var(--text-color);
    font-size: 1rem;
    transition: box-shadow 0.2s, background-color 0.3s, color 0.3s;
}

select:focus, input[type="number"]:focus {
    box-shadow: 4px 4px 0px var(--shadow-color);
}

input:disabled, select:disabled {
    background-color: var(--drop-bg);
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.6;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--border-color);
    cursor: pointer;
    height: 8px;
}

small { font-size: 0.8rem; color: var(--text-muted); font-weight: 700; display: block; margin-top: 5px;}

/* Section: Action Buttons */
.action-bar {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

button {
    cursor: pointer;
    border: 4px solid var(--border-color);
    border-radius: 16px;
    font-weight: 900;
    font-size: 1.2rem;
    padding: 18px 25px;
    transition: all 0.1s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-color);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-main { background-color: var(--btn-main); box-shadow: 6px 6px 0px var(--shadow-color); flex: 2; }
.btn-main:active:not(:disabled) { transform: translate(4px, 4px); box-shadow: 2px 2px 0px var(--shadow-color); }

.btn-outline { background-color: var(--card-bg); box-shadow: 6px 6px 0px var(--shadow-color); flex: 1; }
.btn-outline:active { transform: translate(4px, 4px); box-shadow: 2px 2px 0px var(--shadow-color); }

/* Section: Results and Footer */
.result-container { margin-top: 25px; }
.result-header { font-weight: 900; font-size: 1.4rem; margin-bottom: 20px; border-bottom: 4px solid var(--border-color); padding-bottom: 10px; display: inline-block;}

.result-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.result-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 25px;
}

.file-info { display: flex; align-items: center; gap: 15px; text-align: start;}
.file-info img { width: 60px; height: 60px; border-radius: 12px; border: 3px solid var(--border-color); object-fit: cover; }
.file-name { font-weight: 800; font-size: 1rem; }

.dl-icon-btn {
    background: var(--btn-icon);
    border: 3px solid var(--border-color);
    padding: 10px;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 3px 3px 0px var(--shadow-color);
}
.dl-icon-btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0px var(--shadow-color); }

.app-footer {
    margin-top: 60px;
    padding: 30px;
    border-top: 5px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    align-items: center;
    white-space: nowrap;
}

.footer-socials {
    display: flex;
    gap: 12px;
    align-items: center;
    direction: ltr;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: var(--card-bg);
    border: 3px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-color);
    transition: all 0.1s;
    box-shadow: 3px 3px 0px var(--shadow-color);
}

.social-icon:hover {
    transform: translate(-2px, -2px);
    box-shadow: 5px 5px 0px var(--shadow-color);
    background: var(--drop-hover);
}

.social-icon:active {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0px var(--shadow-color);
}

.footer-link { text-decoration: none; color: var(--text-color); font-weight: 800; font-size: 0.9rem; }
.footer-link:hover { text-decoration: underline; text-decoration-thickness: 3px;}
.dot-separator { display: inline-block; width: 6px; height: 6px; background: var(--text-color); border-radius: 50%; margin: 0 15px; vertical-align: middle; transition: background 0.3s;}
.support { color: #e91e63; }
.guide { color: #3b82f6; }

.hidden { display: none !important; }

/* Section: Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal-content {
    background: var(--card-bg);
    color: var(--text-color);
    width: 100%;
    max-width: 650px;
    max-height: 90vh;
    overflow-y: auto;
    border: 5px solid var(--border-color);
    border-radius: 24px;
    box-shadow: 12px 12px 0px var(--shadow-color);
    padding: 30px;
    text-align: start;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 4px solid var(--border-color);
    padding-bottom: 20px;
    margin-bottom: 25px;
}

.modal-header h2 { font-size: 1.8rem; font-weight: 900; }

.btn-close {
    background: var(--btn-danger);
    color: #fff;
    border: 4px solid var(--border-color);
    border-radius: 12px;
    width: 45px;
    height: 45px;
    font-size: 2rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 4px 4px 0px var(--shadow-color);
    padding: 0;
}
.btn-close:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0px var(--shadow-color); }

.help-section { margin-bottom: 25px; }
.help-section h3 { display: flex; align-items: center; gap: 8px; font-size: 1.3rem; margin-bottom: 10px; font-weight: 900; }
.help-section p { font-size: 1rem; font-weight: 600; margin-bottom: 8px; color: var(--text-muted);}
.help-section ul { list-style-type: disc; margin-inline-start: 25px; font-weight: 600; color: var(--text-muted);}
.help-section li { margin-bottom: 8px; }

/* Section: Responsive Adjustments */
@media (max-width: 650px) {
    .main-header { flex-direction: column; gap: 20px; text-align: center; }
    .header-titles h1 { font-size: 1.8rem; }
    .config-grid { grid-template-columns: 1fr; }
    .action-bar { flex-direction: column; }
    .drop-card { padding: 30px 15px; }
    .result-item { flex-direction: column; gap: 15px; text-align: center; }
    .file-info { flex-direction: column; text-align: center;}
    .dl-icon-btn { width: 100%; }
    
    .app-footer {
        flex-direction: column;
        gap: 25px;
        text-align: center;
    }
    .dot-separator {
        margin: 0 8px;
    }
    .footer-socials {
        justify-content: center;
    }
}