:root {
    --primary: #4F46E5;
    --primary-hover: #4338CA;
    --bg-color: #F3F4F6;
    --surface: #FFFFFF;
    --text-main: #1F2937;
    --text-muted: #6B7280;
    --border: #E5E7EB;
    --radius: 12px;
}

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

body { background-color: var(--bg-color); color: var(--text-main); height: 100vh; overflow: hidden; }

.app-container { display: flex; height: 100vh; }

.sidebar { width: 260px; background: var(--surface); border-right: 1px solid var(--border); padding: 24px; display: flex; flex-direction: column; }
.logo { font-size: 1.5rem; font-weight: bold; color: var(--primary); margin-bottom: 40px; }
.nav-menu { display: flex; flex-direction: column; gap: 12px; }
.nav-btn { padding: 12px 16px; border: none; background: transparent; text-align: left; font-size: 1rem; color: var(--text-muted); border-radius: var(--radius); cursor: pointer; transition: 0.3s; }
.nav-btn:hover { background: var(--bg-color); color: var(--text-main); }
.nav-btn.active { background: var(--primary); color: white; font-weight: 500; }

.content-area { flex: 1; padding: 40px; overflow-y: auto; }
.tool-section { display: none; animation: fadeIn 0.4s ease; }
.tool-section.active { display: block; }

h2 { font-size: 1.8rem; margin-bottom: 8px; }
p { color: var(--text-muted); margin-bottom: 24px; }

.upload-box { border: 2px dashed var(--border); padding: 30px; text-align: center; border-radius: var(--radius); background: var(--surface); margin-bottom: 24px; cursor: pointer; }
.primary-btn, .download-btn { padding: 12px 24px; background: var(--primary); color: white; border: none; border-radius: var(--radius); cursor: pointer; font-weight: 500; text-decoration: none; display: inline-block; transition: 0.2s; }
.primary-btn:hover, .download-btn:hover { background: var(--primary-hover); }

.dual-view { display: flex; gap: 24px; }
.view-box { flex: 1; background: var(--surface); padding: 16px; border-radius: var(--radius); border: 1px solid var(--border); text-align: center; }

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

/* ... Aapka purana saara CSS same rahega, bas ye neeche add kar dein ... */

.flex-controls {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
    background: var(--surface);
    padding: 15px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.control-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.num-input {
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    width: 80px;
}

/* --- Premium Passport UI Styles --- */
.passport-layout {
    display: grid;
    grid-template-columns: 1fr 380px; /* Left workspace, Right panel */
    gap: 30px;
}

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

.filter-row {
    display: flex;
    gap: 15px;
    background: var(--surface);
    padding: 15px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    font-size: 0.9rem;
}

.filter-row label { display: flex; flex-direction: column; gap: 5px; flex: 1; font-weight: 500;}
.filter-slider { width: 100%; }

/* Right Panel Styles */
.size-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.size-panel h3 { font-size: 1.2rem; margin-bottom: 15px; }

.search-container {
    display: flex;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 12px;
    margin-bottom: 20px;
    background: #f9fafb;
}

.search-container input {
    border: none; background: transparent; outline: none; width: 100%; margin-left: 8px; font-size: 0.95rem;
}

.custom-size-box {
    margin-bottom: 20px;
}

.custom-size-box .label {
    font-size: 0.75rem; color: var(--text-muted); font-weight: 600; margin-bottom: 8px; display: block;
}

.custom-inputs {
    display: flex; align-items: center; gap: 10px;
}

.custom-inputs input {
    flex: 1; padding: 8px; border: 1px solid var(--border); border-radius: 6px; outline: none; width: 60px;
}

.custom-inputs button {
    padding: 8px 16px; background: #EFF6FF; color: var(--primary); border: 1px solid #BFDBFE; border-radius: 6px; cursor: pointer; font-weight: 500; transition: 0.2s;
}
.custom-inputs button:hover { background: #DBEAFE; }

.size-list {
    list-style: none; overflow-y: auto; flex: 1; max-height: 400px;
}

.size-list li {
    display: flex; justify-content: space-between; padding: 12px; border-bottom: 1px solid var(--border); cursor: pointer; transition: 0.2s; align-items: center; border-radius: 6px; margin-bottom: 4px;
}

.size-list li:hover { background: #F3F4F6; }
.size-list li.active { background: #EFF6FF; border-left: 4px solid var(--primary); }

.size-name { font-size: 0.95rem; font-weight: 500; }
.size-px { font-size: 0.8rem; color: var(--primary); font-weight: 600; }