/* Core CSS Grid Framework */
.isc-public-wrapper { width: 100%; max-width: 900px; margin: 0 auto; box-sizing: border-box; font-family: inherit; }
.isc-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.isc-field-group { display: flex; flex-direction: column; }
.isc-col-100 { grid-column: span 2; }
.isc-col-50 { grid-column: span 1; }

.isc-field-group label { display: block; margin-bottom: 8px; font-weight: 600; font-size: 14px; }
.isc-field-group label .req { color: #dc3232; margin-left: 3px; }
.isc-input { width: 100%; padding: 12px 15px; font-size: 15px; box-sizing: border-box; }
.isc-choices { display: flex; flex-direction: column; gap: 8px; margin-top: 5px; }
.isc-choice-label { font-weight: 400 !important; font-size: 14px; display: flex; align-items: center; gap: 8px; }

/* Notice Alerts */
.isc-notice { padding: 15px 20px; margin-bottom: 20px; border-radius: 4px; font-weight: 500; }
.isc-success { background: #d4edda; color: #155724; border-left: 4px solid #28a745; }
.isc-error { background: #f8d7da; color: #721c24; border-left: 4px solid #dc3545; }

/* Responsive Grid Fallback */
@media(max-width: 768px) {
    .isc-col-50 { grid-column: span 2; }
}

/* ==========================================================================
   THEME 1: SLEEK MODERN (Floating/Gradients/Soft Edges)
   ========================================================================== */
.theme-sleek .isc-input {
    border: none; border-bottom: 2px solid #e2e8f0; border-radius: 4px 4px 0 0;
    background: #f8fafc; transition: all 0.3s ease;
}
.theme-sleek .isc-input:focus { border-bottom-color: #3b82f6; background: #ffffff; box-shadow: 0 4px 10px rgba(0,0,0,0.03); outline: none; }
.theme-sleek .isc-field-group label { color: #475569; text-transform: uppercase; font-size: 12px; letter-spacing: 0.5px; }
.theme-sleek .isc-btn {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white; border: none; padding: 15px 35px; border-radius: 30px; font-weight: 600;
    cursor: pointer; transition: transform 0.2s ease, box-shadow 0.2s; box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
}
.theme-sleek .isc-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3); }

/* ==========================================================================
   THEME 2: CLASSICAL PROFESSIONAL (Clean borders, minimalist, square)
   ========================================================================== */
.theme-classical .isc-input {
    border: 1px solid #d1d5db; border-radius: 3px; background: #ffffff;
    transition: border-color 0.2s ease;
}
.theme-classical .isc-input:focus { border-color: #4b5563; outline: none; }
.theme-classical .isc-field-group label { color: #374151; }
.theme-classical .isc-btn {
    background: #ffffff; color: #111827; border: 2px solid #111827;
    padding: 14px 30px; border-radius: 3px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 1px; cursor: pointer; transition: all 0.2s ease;
}
.theme-classical .isc-btn:hover { background: #111827; color: #ffffff; }

/* ==========================================================================
   THEME 3: BUSINESS CORPORATE (Thick structures, dark blues/grays)
   ========================================================================== */
.theme-business .isc-form-grid { background: #f9fafb; padding: 40px; border: 1px solid #e5e7eb; border-top: 4px solid #1e3a8a; }
.theme-business .isc-input {
    border: 2px solid #cbd5e1; border-radius: 0; background: #ffffff;
}
.theme-business .isc-input:focus { border-color: #1e3a8a; outline: none; }
.theme-business .isc-field-group label { color: #1e293b; font-size: 15px; }
.theme-business .isc-btn {
    background: #1e3a8a; color: #ffffff; border: none; padding: 16px 40px;
    border-radius: 0; font-weight: 700; font-size: 16px; cursor: pointer; transition: background 0.2s;
}
.theme-business .isc-btn:hover { background: #172554; }
@media(max-width: 768px) { .theme-business .isc-form-grid { padding: 20px; } }