:root {
    --primary-color: #5e72e4;
    --secondary-color: #8965e0;
    --bg-color: #f6f9fc;
    --widget-bg: #ffffff;
    --text-color: #525f7f;
    --heading-color: #32325d;
    --border-color: #e9ecef;
    --success-color: #2dce89;
    --danger-color: #f5365c;
    --shadow-color: rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Kanit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Login Page Styles --- */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}
.login-container { width: 100%; max-width: 420px; padding: 20px; }
.login-box { background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); padding: 40px; border-radius: 16px; box-shadow: 0 15px 35px rgba(0,0,0,0.15); border: 1px solid rgba(255, 255, 255, 0.2); animation: fadeIn 0.5s ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
.login-header { text-align: center; margin-bottom: 30px; }
.login-header .login-icon { font-size: 3.5rem; color: var(--primary-color); margin-bottom: 15px; background: -webkit-linear-gradient(135deg, var(--primary-color), var(--secondary-color)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; display: inline-block; }
.login-header h2 { margin: 0; font-size: 2rem; font-weight: 700; color: var(--heading-color); }
.login-header p { margin: 5px 0 0; color: #8898aa; }
.login-box .form-group { margin-bottom: 25px; }
.login-box .form-group label { font-weight: 500; font-size: 0.9rem; margin-bottom: 8px; display: block; }
.input-wrapper { position: relative; }
.login-box .form-group input { width: 100%; padding: 12px 15px 12px 45px; border: 1px solid var(--border-color); border-radius: 8px; font-family: 'Kanit', sans-serif; font-size: 1rem; box-sizing: border-box; background-color: #fff; transition: border-color 0.2s, box-shadow 0.2s; }
.login-box .form-group input:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(94, 114, 228, 0.25); }
.input-icon { position: absolute; left: 15px; top: 50%; transform: translateY(-50%); color: #adb5bd; transition: color 0.2s; }
.login-box .form-group input:focus + .input-icon, .login-box .form-group input:focus ~ .password-toggle i { color: var(--primary-color); }
.password-toggle { position: absolute; right: 15px; top: 50%; transform: translateY(-50%); cursor: pointer; color: #adb5bd; }
.login-btn { width: 100%; padding: 14px; background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); color: white; border: none; border-radius: 8px; font-size: 1.1rem; font-weight: 500; cursor: pointer; transition: all 0.3s; box-shadow: 0 4px 15px rgba(94, 114, 228, 0.4); }
.login-btn:hover { transform: translateY(-2px); box-shadow: 0 7px 20px rgba(94, 114, 228, 0.5); }
.login-btn:disabled { background: #adb5bd; cursor: not-allowed; box-shadow: none; transform: none; }
.login-error { color: var(--danger-color); text-align: center; margin-top: 15px; height: 20px; font-weight: 500; }

/* --- Main Panel Styles --- */
/* UPDATED: Full-screen container */
.container {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 25px 40px;
    box-sizing: border-box;
}

header { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-color); padding-bottom: 20px; margin-bottom: 30px; }
header h1 { color: var(--heading-color); margin: 0; font-size: 1.8rem; }
header h1 .fa-robot { color: var(--primary-color); }
.header-controls { display: flex; align-items: center; gap: 15px; }
#welcome-user { font-weight: 500; color: var(--text-color); }
.header-btn { background: #e9ecef; color: #495057; border: none; padding: 8px 15px; border-radius: 20px; cursor: pointer; transition: all 0.2s; font-family: 'Kanit', sans-serif; font-size: 0.9rem; }
.header-btn i { margin-right: 5px; }
.header-btn:hover { background: #d3d9df; }
.header-btn.logout { background-color: #fde2e6; color: var(--danger-color); }
.header-btn.logout:hover { background-color: var(--danger-color); color: white; }

.main-content { display: flex; flex-wrap: wrap; gap: 30px; }
.widget-left { flex: 2; min-width: 400px; }
.widget-right { flex: 3; min-width: 450px; }
.widget-left, .widget-right { background: var(--widget-bg); padding: 25px; border-radius: 12px; box-shadow: 0 5px 20px var(--shadow-color); }

h3 { margin-top: 0; font-size: 1.3rem; color: var(--heading-color); font-weight: 500; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
h3 i { color: var(--primary-color); }

.server-file-list { max-height: calc(100vh - 280px); /* Adjust height dynamically */ overflow-y: auto; padding-right: 10px; }
.file-item { display: flex; align-items: center; gap: 15px; padding: 12px; border-radius: 8px; }
.file-item:nth-child(even) { background-color: var(--bg-color); }
.file-item i { color: var(--secondary-color); width: 20px; text-align: center; }
.file-item span { flex-grow: 1; }

.edit-btn, .delete-btn { 
    background: none; 
    border: none; 
    cursor: pointer; 
    font-size: 1rem; 
    padding: 5px; 
    border-radius: 50%; 
    width: 30px; 
    height: 30px; 
    line-height: 20px; 
    text-align: center; 
    transition: all 0.2s; 
    flex-shrink: 0; 
    margin-left: 5px;
}
.delete-btn { color: #adb5bd; }
.delete-btn:hover { background-color: #fde2e6; color: var(--danger-color); }
.edit-btn { color: #adb5bd; }
.edit-btn:hover { background-color: #e3e8ff; color: var(--primary-color); }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 500; color: #555; }
.form-group input[type="text"], .form-group textarea, .form-group select { width: 100%; padding: 12px 15px; border: 1px solid var(--border-color); border-radius: 8px; font-family: 'Kanit', sans-serif; font-size: 1rem; box-sizing: border-box; transition: border-color 0.2s, box-shadow 0.2s; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(94, 114, 228, 0.25); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: flex-end; }
.icon-group, .file-group { flex: 1; }
.icon-preview-wrapper { display: flex; align-items: center; gap: 10px; }
.select-icon-btn, .file-upload-btn { padding: 12px 18px; background-color: #8898aa; color: white; border: none; border-radius: 8px; cursor: pointer; transition: background-color 0.2s; font-family: 'Kanit', sans-serif; }
.file-upload-btn { display: inline-flex; align-items: center; gap: 8px; }
.select-icon-btn:hover, .file-upload-btn:hover { background-color: #6c757d; }
.icon-preview { font-size: 1.8rem; color: var(--primary-color); }
.file-input-wrapper { display: flex; align-items: center; gap: 10px; }
input[type="file"] { display: none; }
.file-name-display { color: #8898aa; font-style: italic; font-size: 0.9em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex-grow: 1; }

.upload-btn { width: 100%; font-size: 1.1rem; padding: 14px; background: linear-gradient(45deg, var(--success-color), #23b26d); color: white; border: none; border-radius: 8px; cursor: pointer; font-family: 'Kanit', sans-serif; transition: all 0.2s; box-shadow: 0 4px 15px rgba(45, 206, 137, 0.4); }
.upload-btn:hover { transform: translateY(-2px); box-shadow: 0 7px 20px rgba(45, 206, 137, 0.5); }
.upload-btn:disabled { background: #adb5bd; box-shadow: none; transform: none; cursor: not-allowed; }

.upload-status { margin-top: 15px; padding: 12px; border-radius: 8px; text-align: center; font-weight: 500; display: none; }
.upload-status.success { display: block; background-color: #eafaf1; color: #1a6e43; }
.upload-status.error { display: block; background-color: #fddfe5; color: #c0392b; }

.category-wrapper { display: flex; gap: 10px; }
#pack-category { flex-grow: 1; }
.add-new-btn { flex-shrink: 0; width: 44px; height: 44px; padding: 0; font-size: 1.5rem; font-weight: bold; background-color: var(--success-color); color: white; border: none; border-radius: 8px; cursor: pointer; line-height: 44px; text-align: center; }

/* Modal Styles */
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.6); backdrop-filter: blur(5px); }
.modal-content { background-color: #fff; margin: 10% auto; padding: 0; border-radius: 12px; width: 80%; max-width: 800px; box-shadow: 0 10px 30px rgba(0,0,0,0.2); animation: fadeInModal 0.3s ease; }
@keyframes fadeInModal { from { opacity: 0; transform: translateY(-30px); } to { opacity: 1; transform: translateY(0); } }
.modal-header { padding: 15px 25px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.close-modal { color: #aaa; font-size: 28px; font-weight: bold; cursor: pointer; transition: color 0.2s; }
.close-modal:hover, .close-modal:focus { color: #333; }
.modal-body { padding: 25px; }
#icon-search { width: 100%; padding: 12px; margin-bottom: 20px; border: 1px solid var(--border-color); border-radius: 8px; box-sizing: border-box; }
.icon-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(60px, 1fr)); gap: 10px; max-height: 400px; overflow-y: auto; }
.icon-grid-item { display: flex; align-items: center; justify-content: center; padding: 10px; border: 1px solid transparent; border-radius: 8px; font-size: 1.8rem; cursor: pointer; transition: all 0.2s; }
.icon-grid-item:hover { background-color: #e9ecef; border-color: var(--primary-color); }