/* ============================================= */
/* THEME VARIABLES (নতুন একক থিম)                */
/* ============================================= */

#nid-generator-app {
      font-family: 'Anek Bangla', sans-serif !important;
    --bg-main: #f0f2f5;
    --bg-content: #ffffff;
    --bg-input: #ffffff;
    --bg-darker: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --border-darker: #ced4da;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --tab-inactive-bg: #e9ecef;
    --tab-inactive-text: #6c757d;
    
    /* নতুন থিম কালার */
    --primary-color: #344555;
    --primary-hover: #232e3a; /* #344555 এর গাঢ় শেড */
}









/* ============================================= */
/* GENERAL STYLES (USING THEME VARIABLES)        */
/* ============================================= */

#nid-generator-app {
    font-family: 'Anek Bangla', Arial, sans-serif;
    max-width: 1480px;
    margin: 30px auto;
    padding: 20px;
    background-color: var(--bg-main);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 25px var(--shadow-color);
    transition: background-color 0.3s, color 0.3s;
}

h3, h4 {
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 20px;
}
.controls-panel h4 { margin-top:0; border-bottom: 1px solid var(--border-darker); padding-bottom: 10px; }

.app-body { display: flex; gap: 20px; }
.main-content { flex-grow: 1; display: flex; flex-direction: column; gap: 20px; }

.settings-panel {
    flex: 0 0 280px;
    padding: 20px;
    background-color: var(--bg-content);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 25px;
}

/* Tab Navigation (কালার আপডেট) */
.tab-nav { display: flex; gap: 10px; border-bottom: 2px solid var(--border-darker); }
.tab-button {
    padding: 12px 25px;
    cursor: pointer;
    border: none;
    background-color: var(--tab-inactive-bg);
    color: var(--tab-inactive-text);
    font-size: 1.1em;
    font-weight: 600;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
    border-radius: 5px 5px 0 0;
}
.tab-button:not(.active):hover { background-color: var(--border-darker); color: var(--text-primary); }
.tab-button.active {
    background-color: var(--primary-color);
    color: #ffffff;
    border-bottom: 3px solid var(--primary-hover);
}
.tab-button:disabled { background-color: var(--bg-content); color: #999; cursor: not-allowed; }

/* Tab Content */
.tab-content .tab-pane { display: none; padding: 20px; background-color: var(--bg-content); border-radius: 8px; border: 1px solid var(--border-color); }
.tab-content .tab-pane.active { display: block; }

/* Input Groups (কালার আপডেট) */
.input-group { display: flex; flex-direction: column; align-items: center; gap: 15px; }
.label-group { 
    display: flex; 
    align-items: center; 
    gap: 10px;
    width: 100%;
    justify-content: space-between;
}
.input-group label { font-weight: 600; color: var(--text-primary); }

input[type="file"] {
    background-color: var(--bg-input);
    border: 1px solid var(--border-darker);
    color: var(--text-primary);
    border-radius: 6px;
    padding: 10px;
    width: 100%;
    max-width: 500px;
}
input[type="file"]::file-selector-button { 
    background-color: var(--primary-color); 
    color: white; 
    border: none; 
    border-radius: 4px; 
    padding: 8px 15px; 
    cursor: pointer; 
    transition: background-color 0.2s ease; 
}
input[type="file"]::file-selector-button:hover { background-color: var(--primary-hover); }


/* Image Preview */
.image-preview-container {
    width: 100%;
    height: 480px;
    border: 1px solid var(--border-darker);
    background-color: var(--bg-main);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}
.image-preview-canvas { max-width: 100%; max-height: 100%; object-fit: contain; }

/* Controls & Settings Panel */
.settings-panel .controls-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 20px;
    background-color: var(--bg-darker);
    border-radius: 8px;
    border: 1px solid var(--border-darker);
}
.settings-panel .control-group { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; width: 100%; }
.settings-panel .control-group label { font-weight: 600; }
.settings-panel .controls-panel input[type="range"] { width: 100%; }

/* Buttons (কালার আপডেট) */
.button-group-vertical { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 10px; }
.generation-section { display: flex; flex-direction: column; gap: 15px; margin-top: 10px; }
.primary-button, .secondary-button, .success-button { padding: 12px 25px; border: none; border-radius: 6px; cursor: pointer; font-size: 1.1em; font-weight: 600; transition: all 0.3s ease; width: 100%; }

.primary-button { background-color: var(--primary-color); color: white; }
.primary-button:hover { background-color: var(--primary-hover); }

.secondary-button { background-color: #6c757d; color: white; }
.secondary-button:hover { background-color: #5a6268; }

.success-button { background-color: var(--primary-color); color: white; }
.success-button:hover { background-color: var(--primary-hover); }

.reset-button { background-color: #dc3545; color: white; }
.reset-button:hover { background-color: #c82333; }

.manual-crop-button { background-color: var(--primary-color); color: white; }
.manual-crop-button:hover { background-color: var(--primary-hover); }

/* === আউটপুট ক্যানভাস (আপডেট করা হয়েছে) === */
#combinedNIDCanvas { 
    display: block; 
    max-width: 100%; 
    background-color: #fff; 
    max-height: 100%; /* কন্টেইনারের উচ্চতার বেশি হবে না */
    object-fit: contain; /* রেশিও ঠিক রেখে ফিট হবে */
}
/* === পরিবর্তন শেষ === */

/* Switch Toggle */
.control-group-inline { display: flex; align-items: center; gap: 10px; justify-content: space-between; }
.switch { position: relative; display: inline-block; width: 60px; height: 34px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; transition: .4s; }
.slider:before { position: absolute; content: ""; height: 26px; width: 26px; left: 4px; bottom: 4px; background-color: white; transition: .4s; }
input:checked + .slider { background-color: var(--primary-color); }
input:checked + .slider:before { transform: translateX(26px); }
.slider.round { border-radius: 34px; }
.slider.round:before { border-radius: 50%; }

/* Rotate Button */
.rotate-button {
    background-color: #6c757d;
    color: white;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    font-size: 22px;
    line-height: 32px;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s ease;
    padding: 0;
    font-weight: bold;
}
.rotate-button:hover {
    background-color: #5a6268;
    transform: rotate(90deg);
}

/* Responsive Adjustments */
@media (max-width: 992px) { .app-body { flex-direction: column; } .settings-panel { flex-basis: auto; width: 100%; } }
@media (max-width: 768px) { .tab-button { padding: 10px 15px; font-size: 1em; } .button-group-vertical button { flex-grow: 1; } }


/* ============================================= */
/* === NID আউটপুট মডাল স্টাইল (আপডেট করা হয়েছে) === */
/* ============================================= */
#nid-output-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: none; /* JS দিয়ে flex করা হবে */
    align-items: center; /* ভার্টিকাল সেন্টার */
    justify-content: center; /* হরিজন্টাল সেন্টার */
    padding: 20px;
    box-sizing: border-box;
}

#nid-output-modal .modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    
    /* === নতুন সলিড সাদা ব্যাকগ্রাউন্ড === */
    background-color: #FFFFFF; /* সলিড সাদা */
    /* === পরিবর্তন শেষ === */
    
    cursor: pointer;
}

#nid-output-modal .modal-content {
    position: relative;
    background-color: var(--bg-content); /* সলিড সাদা */
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
    width: 90%;
    max-width: 850px; 
    z-index: 10000;
    max-height: 90vh; /* স্ক্রিনের ৯০% উচ্চতা */
    display: flex;
    flex-direction: column;
    overflow: hidden; 
}

#nid-output-modal .modal-content h3 {
    margin-top: 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 20px;
    flex-shrink: 0;
    color: var(--text-primary);
}

#nid-output-modal .close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    color: #888;
    cursor: pointer;
}
#nid-output-modal .close-modal:hover { color: #333; }

/* Side-by-Side লেআউট */
#nid-output-modal .modal-main-layout {
    display: flex;
    gap: 25px;
    flex-grow: 1; 
    min-height: 0; 
}

/* বাম দিক: প্রিভিউ */
#nid-output-modal .modal-preview-area {
    flex: 1; 
    display: flex;
    flex-direction: column;
    min-width: 0;
}
#nid-output-modal .modal-body {
    flex-grow: 1; 
    overflow-y: auto;
    padding: 10px;
    text-align: center;
    background-color: var(--bg-main); /* হালকা ধূসর (#f0f2f5) */
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    
    /* ক্যানভাসকে উচ্চতায় ফিট করানোর জন্য */
    min-height: 0; 
}

/* ডান দিক: কন্ট্রোল */
#nid-output-modal .modal-controls-area {
    flex: 0 0 260px; 
    display: flex;
    flex-direction: column;
    gap: 20px; 
}

/* স্লাইডার প্যানেল */
#nid-output-modal .modal-controls-panel {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 15px;
    background-color: var(--bg-darker);
    border-radius: 8px;
    flex-shrink: 0; 
}
#nid-output-modal .modal-controls-panel .control-group {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    width: 100%;
}
#nid-output-modal .modal-controls-panel .control-group label {
    font-weight: 600;
    color: var(--text-primary);
}
#nid-output-modal .modal-controls-panel input[type="range"] {
    width: 100%;
}

/* বাটন প্যানেল */
#nid-output-modal .modal-footer {
    display: flex;
    flex-direction: column; 
    gap: 10px;
    margin-top: auto; 
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

/* === বাটন ব্যাকগ্রাউন্ড ফিক্স === */
#nid-output-modal .modal-footer .secondary-button {
    width: 100%;
    background-color: #6c757d;
    color: white;
}
#nid-output-modal .modal-footer .secondary-button:hover {
    background-color: #5a6268;
}

#nid-output-modal .modal-footer .success-button {
    width: 100%;
    background-color: #28a745; /* সবুজ কালার */
    color: white;
}
#nid-output-modal .modal-footer .success-button:hover {
    background-color: #218838; /* গাঢ় সবুজ */
}
/* === বাটন ফিক্স শেষ === */

/* রেসপন্সিভ: মোবাইল ডিভাইসে লেআউট পরিবর্তন */
@media (max-width: 768px) {
    #nid-output-modal .modal-main-layout {
        flex-direction: column; 
        overflow-y: auto; 
    }
    #nid-output-modal .modal-controls-area {
        flex-basis: auto; 
        margin-top: 0;
    }
    #nid-output-modal .modal-footer {
         margin-top: 0; 
    }
}