/* --- General & Variables --- */
:root {
    --primary-color: #4A90E2;
    --primary-color-dark: #357ABD;
    --primary-color-light: #EAF2FB;
    --success-color: #28a745;
    --success-color-dark: #218838;
    --danger-color: #dc3545;
    --danger-color-dark: #c82333;
    --border-color: #E5E7EB;
    --background-color: #F9FAFB;
    --text-color: #1F2937;
    --text-muted: #6B7280;
    --white: #fff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --border-radius: 8px;
    --transition-speed: 0.2s ease-in-out;
}

body {
    font-family: 'Be Vietnam Pro', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Main Header & Navigation --- */
.main-header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    height: 64px;
}
.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: opacity var(--transition-speed);
}
.logo:hover { opacity: 0.8; }

.main-nav { display: flex; gap: 0.5rem; }
.nav-btn {
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    background: none;
    cursor: pointer;
    transition: all var(--transition-speed);
    color: var(--text-muted);
}
.nav-btn:hover {
    color: var(--text-color);
    background-color: #f3f4f6;
}
.nav-btn.active {
    background-color: var(--primary-color-light);
    color: var(--primary-color);
    font-weight: 600;
}

/* --- App Container --- */
#app-container {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* --- Editor View: Quote Name Bar --- */
#editor-title-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: var(--white);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}
#editor-title-bar label {
    font-weight: 600;
    color: var(--text-muted);
}
#quote-name-input {
    flex-grow: 1;
    font-size: 1.2rem;
    font-weight: 600;
    border: none;
    background: transparent;
    padding: 0.25rem 0;
    outline: none;
    color: var(--primary-color);
    border-bottom: 2px solid transparent;
    transition: border-color var(--transition-speed);
}
#quote-name-input:focus { border-color: var(--primary-color-light); }


/* --- Editor View: Page & Layout --- */
.page {
    width: 100%;
    max-width: 1140px; 
    min-height: 297mm;
    padding: 25mm;
    margin: 0 auto;
    background: var(--white);
    box-shadow: var(--shadow-md);
    box-sizing: border-box;
    border-radius: var(--border-radius);
}
.quote-header {
    display: flex; justify-content: space-between; align-items: flex-start;
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 1rem; margin-bottom: 2rem;
}
.company-info { 
    display: flex;
    gap: 20px;
    align-items: flex-start;
    flex-basis: 60%;
}
.company-details-wrapper {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.company-info input {
    border: none; background: transparent; padding: 6px 8px; width: 100%;
    font-family: inherit; transition: background-color var(--transition-speed); border-radius: 4px;
}
.company-info input:focus { outline: none; background-color: var(--primary-color-light); }
.company-name-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}
.company-name-wrapper .company-name-input {
    flex-grow: 1;
}
.company-name-input { font-size: 1.8em; font-weight: 700; color: var(--text-color); margin: 0 0 5px -8px; }
.company-details-input { font-size: 0.9em; color: var(--text-muted); line-height: 1.5; }

.quote-title { text-align: right; }
.quote-title h2 { color: var(--primary-color); margin: 0; font-size: 2.4em; text-align: right; font-weight: 700; }
.quote-title p {
    text-align: right; margin: 5px 0 0 0; font-size: 1em; display: flex;
    justify-content: flex-end; align-items: center; color: var(--text-muted);
}
.quote-title input {
    border: none; background: transparent; text-align: left;
    font-family: inherit; font-size: inherit; padding: 6px 8px;
    width: 120px; margin-left: 5px; border-radius: 4px; color: var(--text-color);
}
.quote-title input:focus { background-color: var(--primary-color-light); outline: none; }
.quote-title #quote-date { font-style: italic; }

/* Logo Uploader & Color Picker */
.logo-container {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    position: relative;
    background-color: #f9fafb;
    overflow: hidden;
}
.logo-container:hover {
    border-color: var(--primary-color);
    background-color: var(--primary-color-light);
}
#logo-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.9em;
    font-weight: 500;
    text-align: center;
}
#logo-placeholder svg {
    width: 32px;
    height: 32px;
}
#company-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
#primary-color-picker {
    width: 32px;
    height: 32px;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    background: none;
    cursor: pointer;
    transition: all var(--transition-speed);
    flex-shrink: 0;
}
#primary-color-picker:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow);
}
#primary-color-picker::-webkit-color-swatch-wrapper {
    padding: 0;
}
#primary-color-picker::-webkit-color-swatch {
    border: none;
    border-radius: 50%;
}

/* --- Client Info --- */
.client-info-grid {
    display: grid; grid-template-columns: auto 1fr;
    gap: 10px 15px; align-items: center; margin-bottom: 2rem;
}
.client-info-grid label { font-weight: 600; text-align: right; color: var(--text-muted); }
.client-info-grid input {
    width: 100%; border: 1px solid var(--border-color); padding: 10px 14px;
    box-sizing: border-box; border-radius: var(--border-radius);
    font-family: inherit; font-size: 1em; transition: all var(--transition-speed);
}
.client-info-grid input:focus {
    border-color: var(--primary-color); outline: none;
    box-shadow: 0 0 0 3px var(--primary-color-light);
}

/* --- Quote Table --- */
table { width: 100%; border-collapse: separate; border-spacing: 0; margin-top: 5px; table-layout: fixed; }
th, td { border-bottom: 1px solid var(--border-color); padding: 14px 10px; text-align: left; vertical-align: top; }
th { background-color: #f9fafb; text-align: center; font-weight: 600; font-size: 0.85em; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); border-top: 1px solid var(--border-color); }
th:first-child { border-top-left-radius: var(--border-radius); }
th:last-child { border-top-right-radius: var(--border-radius); }
td { vertical-align: middle; }
tbody tr:not(.category-header):hover { background-color: #f9fafb; }

.col-stt { width: 5%; } .col-content { width: 42%; } .col-unit { width: 8%; }
.col-volume { width: 8%; } .col-qty { width: 7%; } .col-price { width: 12%; }
.col-total { width: 13%; } .col-actions { width: 5%; }

.text-right { text-align: right; }

input[type="text"], input[type="number"], textarea.item-spec {
    width: 100%; border: none; padding: 6px 2px; box-sizing: border-box;
    background-color: transparent; font-family: inherit; font-size: 1em; border-radius: 4px;
}
input:focus, textarea.item-spec:focus { outline: none; background-color: var(--primary-color-light); }
td input[type="number"], td .quantity, .price { text-align: right; }

.category-header td {
    background-color: var(--primary-color-light); font-weight: bold;
    border-left: 3px solid var(--primary-color); border-bottom: 1px solid var(--primary-color-light); padding: 8px 12px;
}
.category-header input[type="text"] { font-weight: bold; font-size: 1.1em; color: var(--primary-color); }
.category-header input::placeholder { color: var(--primary-color); opacity: 0.7; font-weight: bold; }

.category-total {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1em;
    vertical-align: middle;
    white-space: nowrap;
}

.delete-btn {
    background: none; border: none; color: var(--text-muted); cursor: pointer;
    opacity: 0; transition: all var(--transition-speed); padding: 0; width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center; margin: 0 auto;
    border-radius: 50%;
}
tr:hover .delete-btn { opacity: 0.5; }
.delete-btn:hover { opacity: 1; color: var(--danger-color); background-color: #fee2e2; }

.content-cell { display: flex; flex-direction: column; gap: 8px; }
.item-name { font-weight: 600; }
.spec-wrapper { position: relative; }
.item-spec {
    font-style: italic; font-size: 0.9em; color: var(--text-muted);
    line-height: 1.4; resize: none; overflow: hidden; min-height: 25px;
    padding-right: 32px !important;
}
td .volume { font-size: 0.9em; color: var(--text-muted); font-family: 'Courier New', Courier, monospace; }

.dimensions-wrapper {
    display: flex; align-items: center; gap: 5px;
    padding: 6px; background-color: #f3f4f6; border-radius: var(--border-radius);
}
.dimensions-wrapper label { font-size: 0.85em; font-weight: 500; color: var(--text-muted); margin-right: 4px; }
.dimensions-wrapper input[type="number"] {
    width: 60px; text-align: center; padding: 4px; background-color: var(--white);
    border: 1px solid var(--border-color); border-radius: 4px; transition: all var(--transition-speed);
}
.dimensions-wrapper input[type="number"]:focus { background-color: var(--primary-color-light); border-color: var(--primary-color); }
.dimensions-wrapper span { color: var(--text-muted); }

/* --- AI Spec Button --- */
.ai-spec-btn {
    position: absolute;
    top: 50%;
    right: 5px;
    transform: translateY(-50%);
    width: 26px;
    height: 26px;
    background-color: transparent;
    color: var(--text-muted);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    opacity: 0.7; /* Always visible, but subtle */
    z-index: 10;
}

/* Make button more prominent on interaction */
.spec-wrapper:hover .ai-spec-btn,
.item-spec:focus + .ai-spec-btn,
.ai-spec-btn:focus {
    opacity: 1;
    color: var(--primary-color);
}

.ai-spec-btn:hover {
    background-color: var(--primary-color-light);
    transform: translateY(-50%) scale(1.1);
}

.ai-spec-btn.loading {
    cursor: wait;
    pointer-events: none;
    transform: translateY(-50%) scale(1);
    animation: pulse 1.5s infinite;
}
.ai-spec-btn.loading svg {
    display: none;
}
.ai-spec-btn .spinner {
    display: none;
    width: 14px;
    height: 14px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
.ai-spec-btn.loading .spinner {
    display: block;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(var(--primary-color), 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(var(--primary-color), 0); }
    100% { box-shadow: 0 0 0 0 rgba(var(--primary-color), 0); }
}

/* --- Totals Summary --- */
.quote-summary {
    width: 50%;
    margin-left: auto; /* Push to the right */
    margin-top: 1.5rem;
    font-size: 1.05em;
    font-weight: 500;
}
.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    align-items: center;
    border-bottom: 1px solid #f0f0f0;
}
.summary-item:first-child {
    padding-top: 1rem;
    border-top: 2px solid var(--border-color);
}
.summary-item:last-child {
    border-bottom: none;
}
.summary-label {
    color: var(--text-muted);
    font-weight: 500;
}
.summary-value {
    text-align: right;
    font-weight: 700;
    white-space: nowrap;
}
.grand-total .summary-label {
    font-weight: 700;
    font-size: 1.1em;
    color: var(--text-color);
}
.grand-total .summary-value {
    color: var(--primary-color);
    font-size: 1.25em;
    font-weight: 700;
}

#vat-rate {
    width: 50px; border: 1px solid var(--border-color); border-radius: 4px;
    padding: 4px 5px; text-align: center; font-weight: 600; transition: all var(--transition-speed);
}
#vat-rate:focus { border-color: var(--primary-color); box-shadow: 0 0 0 3px var(--primary-color-light); }

.table-actions { margin: 1.5rem 0 2rem 0; display: flex; gap: 10px; flex-wrap: wrap; }
.table-actions button {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 20px; font-size: 15px; cursor: pointer;
    background-color: var(--white); color: var(--text-color);
    border: 1px solid var(--border-color); border-radius: var(--border-radius); font-weight: 600;
    transition: all var(--transition-speed);
    box-shadow: var(--shadow-sm);
}
.table-actions button:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: #d1d5db; }
.table-actions button svg { color: var(--text-muted); }
.table-actions button#add-row { background-color: var(--primary-color); color: var(--white); border-color: var(--primary-color); }
.table-actions button#add-row:hover { background-color: var(--primary-color-dark); border-color: var(--primary-color-dark); }
.table-actions button#add-row svg { color: var(--white); }
#add-from-saved { background-color: var(--success-color); color: var(--white); border-color: var(--success-color); }
#add-from-saved:hover { background-color: var(--success-color-dark); border-color: var(--success-color-dark); }
#add-from-saved svg { color: var(--white); }

/* --- Footer --- */
.quote-footer {
    margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--border-color);
    font-size: 0.9em; display: flex; justify-content: space-between;
    align-items: flex-start; gap: 40px;
}
.signature { margin-top: 0; text-align: right; flex-shrink: 0; }
.notes { flex: 1; } .notes strong { display: block; margin-bottom: 5px; color: var(--text-color); }
.notes textarea {
    width: 100%; border: 1px solid var(--border-color); padding: 10px 14px;
    box-sizing: border-box; border-radius: var(--border-radius); font-family: inherit;
    font-size: 1em; line-height: 1.5; resize: vertical; min-height: 60px;
    transition: all var(--transition-speed);
}
.notes textarea:focus {
    border-color: var(--primary-color); outline: none;
    box-shadow: 0 0 0 3px var(--primary-color-light);
}

/* --- Controls --- */
.controls { margin-top: 2rem; display: flex; gap: 1rem; justify-content: center; }
.controls button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 1rem;
    cursor: pointer;
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all var(--transition-speed);
    box-shadow: var(--shadow);
}
.controls button:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.controls button:active { transform: scale(0.98); }

.controls button:nth-of-type(3) { background-color: var(--primary-color); }
.controls button:nth-of-type(3):hover { background-color: var(--primary-color-dark); }
.controls #save-quote-btn { background-color: var(--success-color); }
.controls #save-quote-btn:hover { background-color: var(--success-color-dark); }
.controls #clear-quote-btn { background-color: var(--danger-color); }
.controls #clear-quote-btn:hover { background-color: var(--danger-color-dark); }


/* --- List View --- */
#list-view, #management-view { padding: 1.5rem; background-color: var(--white); border-radius: var(--border-radius); box-shadow: var(--shadow-md); }
.list-view-header {
    display: flex; justify-content: space-between; align-items: center;
    padding-bottom: 1.5rem; margin-bottom: 1.5rem; border-bottom: 1px solid var(--border-color);
}
.list-view-header h2 { margin: 0; color: var(--primary-color); }
.list-view-actions { display: flex; gap: 1rem; align-items: center; }
#search-quotes-input {
    min-width: 300px; padding: 10px 15px; font-size: 1rem;
    border: 1px solid var(--border-color); border-radius: var(--border-radius);
    transition: all var(--transition-speed);
}
#search-quotes-input:focus {
    border-color: var(--primary-color); outline: none;
    box-shadow: 0 0 0 3px var(--primary-color-light);
}
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    background-color: var(--primary-color); color: white; border: none;
    padding: 10px 20px; font-size: 1rem; border-radius: var(--border-radius);
    cursor: pointer; font-weight: 600; transition: all var(--transition-speed);
    box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background-color: var(--primary-color-dark); box-shadow: var(--shadow); transform: translateY(-2px);}

#saved-quotes-container { display: grid; gap: 1.25rem; }
.quote-card {
    display: flex; justify-content: space-between; align-items: center;
    gap: 1.5rem; padding: 1.5rem; border: 1px solid var(--border-color);
    border-radius: var(--border-radius); transition: all var(--transition-speed);
}
.quote-card:hover { border-color: var(--primary-color); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.quote-card-info { flex-grow: 1; }
.quote-card-name { font-size: 1.25rem; font-weight: 600; margin: 0 0 0.25rem 0; color: var(--text-color); }
.quote-card-details { margin: 0 0 0.5rem 0; color: var(--text-muted); }
.quote-card-meta { margin: 0; font-size: 0.9em; color: var(--text-muted); }
.quote-card-actions { display: flex; gap: 0.75rem; flex-shrink: 0; }
.quote-card-actions button {
    padding: 0;
    border-radius: 50%;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-speed);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    color: var(--text-muted);
}
.quote-card-actions .btn-open:hover {
    background-color: var(--primary-color-light);
    color: var(--primary-color);
}
.quote-card-actions .btn-delete:hover {
    background-color: #fee2e2;
    color: var(--danger-color);
}
.empty-list-message { text-align: center; color: var(--text-muted); padding: 3rem; font-size: 1.1rem; }

/* --- Modals & Indicators --- */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(17, 24, 39, 0.6); display: none;
    align-items: center; justify-content: center; z-index: 2000;
    backdrop-filter: blur(4px); padding: 15px; box-sizing: border-box;
    opacity: 0; transition: opacity var(--transition-speed);
}
.modal-overlay[style*="display: flex"] { display: flex !important; opacity: 1; }
.modal-content {
    background: var(--white); padding: 25px 30px; border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg); width: 100%; max-width: 500px;
    display: flex; flex-direction: column; max-height: 90vh;
    transform: scale(0.95); transition: transform var(--transition-speed);
}
.modal-overlay[style*="display: flex"] .modal-content { transform: scale(1); }

.modal-header {
    display: flex; justify-content: space-between; align-items: center;
    border-bottom: 1px solid var(--border-color); padding-bottom: 15px; margin-bottom: 20px;
}
.modal-header h2 { margin: 0; font-size: 1.5em; color: var(--primary-color); }
.modal-body { line-height: 1.6; font-size: 1.05rem; overflow-y: auto; }
.modal-footer {
    padding-top: 20px; margin-top: auto; display: flex; justify-content: flex-end; gap: 10px;
}
.modal-footer button {
    padding: 10px 20px; font-size: 15px; font-weight: 600;
    border-radius: var(--border-radius); cursor: pointer; border: 1px solid transparent;
    transition: all var(--transition-speed);
}
.modal-footer .btn-danger {
    background-color: var(--danger-color); border-color: var(--danger-color);
    color: var(--white);
}
.modal-footer .btn-danger:hover { background-color: var(--danger-color-dark); }
.modal-footer button:not(.btn-danger) { background-color: #f3f4f6; border-color: #d1d5db; color: var(--text-color); }
.modal-footer button:not(.btn-danger):hover { background-color: #e5e7eb; }

#save-indicator {
    position: fixed; bottom: 20px; right: 20px;
    background-color: #2a3342; color: var(--white);
    padding: 12px 24px; border-radius: var(--border-radius); z-index: 3000;
    opacity: 0; visibility: hidden; transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: var(--shadow-lg);
}
#save-indicator.show { opacity: 1; visibility: visible; transform: translateY(0); }

/* --- Login View --- */
#login-view {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: var(--background-color); display: none;
    align-items: center; justify-content: center; z-index: 9999;
}
#login-view[style*="display: flex"] { display: flex !important; }
.login-box {
    text-align: center; background-color: var(--white);
    padding: 3rem 4rem; border-radius: var(--border-radius); box-shadow: var(--shadow-lg);
}
.login-box p { color: var(--text-muted); margin-top: 0.5rem; margin-bottom: 2rem; }
#login-btn {
    display: inline-flex; align-items: center; gap: 12px;
    padding: 12px 24px; font-size: 1rem; font-weight: 600;
    border: 1px solid var(--border-color); border-radius: var(--border-radius);
    background-color: var(--white); cursor: pointer; transition: all var(--transition-speed);
}
#login-btn:hover { border-color: #d1d5db; box-shadow: var(--shadow); transform: translateY(-2px); }
#login-btn svg { width: 20px; height: 20px; }

/* --- User Profile --- */
#user-profile { display: none; align-items: center; gap: 12px; }
#user-profile[style*="display: flex"] { display: flex !important; }
#user-avatar { width: 40px; height: 40px; border-radius: 50%; border: 2px solid var(--border-color); }
#user-name { font-weight: 600; }
#logout-btn {
    background: transparent; border: none;
    color: var(--text-muted); padding: 8px 12px; border-radius: var(--border-radius);
    cursor: pointer; font-weight: 500; transition: all var(--transition-speed);
    display: flex; align-items: center; gap: 8px;
}
#logout-btn:hover { background: #fee2e2; color: var(--danger-color); }
#logout-btn span { display: block; }

/* --- Management View --- */
.management-content {
    display: grid; grid-template-columns: 380px 1fr;
    gap: 2rem; margin-top: 1rem;
}
.management-form-container {
    padding: 1.5rem; border: 1px solid var(--border-color);
    border-radius: var(--border-radius); background-color: #fdfdff;
    position: sticky; top: 88px; /* 64px header + 24px margin */
}
.management-form-container h3 {
    margin-top: 0; margin-bottom: 1.5rem; color: var(--primary-color);
    border-bottom: 1px solid var(--border-color); padding-bottom: 1rem;
}
#add-item-form { display: flex; flex-direction: column; gap: 1rem; }
#add-item-form input, #add-item-form textarea {
    width: 100%; border: 1px solid var(--border-color); padding: 10px 12px;
    box-sizing: border-box; border-radius: var(--border-radius);
    font-family: inherit; font-size: 1em; transition: all var(--transition-speed);
}
#add-item-form input:focus, #add-item-form textarea:focus {
    border-color: var(--primary-color); outline: none;
    box-shadow: 0 0 0 3px var(--primary-color-light);
}
#add-item-form .form-row { display: flex; gap: 1rem; }
#item-form-cancel-btn { background-color: var(--text-muted); color: var(--white); border: none;}

.management-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}
.management-list-header h3 {
    margin: 0;
}
#search-managed-items-input {
    min-width: 250px;
    padding: 8px 12px;
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: all var(--transition-speed);
}
#search-managed-items-input:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-color-light);
}

#saved-items-list { display: grid; gap: 1rem; }
.managed-item-card {
    display: grid; grid-template-columns: 1fr auto auto;
    gap: 1.5rem; align-items: center; padding: 1rem 1.5rem;
    border: 1px solid var(--border-color); border-radius: var(--border-radius);
    transition: all var(--transition-speed);
}
.managed-item-card:hover { border-color: #d1d5db; box-shadow: var(--shadow); }
.item-card-name { font-weight: 600; margin: 0; }
.item-card-spec { font-size: 0.9em; color: var(--text-muted); margin: 4px 0 0 0; }
.item-card-details { font-weight: 500; text-align: right; white-space: nowrap; }
.item-card-price { color: var(--success-color); font-weight: 600; }
.item-card-actions { display: flex; gap: 0.5rem; }
.item-card-actions button {
    padding: 0;
    border-radius: 50%;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-speed);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    color: var(--text-muted);
}
.btn-edit-item:hover { background-color: var(--primary-color-light); color: var(--primary-color); }
.btn-delete-item:hover { background-color: #fee2e2; color: var(--danger-color); }

/* --- Select Item Modal --- */
.close-modal-btn { background: none; border: none; font-size: 1.8rem; line-height: 1; cursor: pointer; color: var(--text-muted); padding: 0; transition: color var(--transition-speed); }
.close-modal-btn:hover { color: var(--text-color); }
.search-modal-input {
    width: 100%; padding: 12px 16px; font-size: 1rem;
    border: 1px solid var(--border-color); border-radius: var(--border-radius);
    margin-bottom: 1rem; box-sizing: border-box; transition: all var(--transition-speed);
}
.search-modal-input:focus { border-color: var(--primary-color); box-shadow: 0 0 0 3px var(--primary-color-light); outline: none; }
#select-item-list { display: flex; flex-direction: column; gap: 0.5rem; }
.selectable-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 16px; border-radius: var(--border-radius);
    cursor: pointer; transition: background-color var(--transition-speed);
    border: 1px solid transparent;
}
.selectable-item:hover { background-color: var(--primary-color-light); }
.selectable-item .item-name { font-weight: 500; margin: 0; color: var(--text-color); }
.selectable-item .item-details { color: var(--text-muted); font-size: 0.9em; margin: 0; }

/* --- Autocomplete --- */
.autocomplete-box {
    position: absolute;
    border: 1px solid var(--border-color);
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius);
    z-index: 1500;
    display: none;
    max-height: 250px;
    overflow-y: auto;
    box-sizing: border-box;
}
.autocomplete-item {
    padding: 10px 15px; cursor: pointer;
    border-bottom: 1px solid var(--border-color);
}
.autocomplete-item:last-child { border-bottom: none; }
.autocomplete-item:hover, .autocomplete-item.active { background-color: var(--primary-color-light); }
.autocomplete-item p { margin: 0; pointer-events: none; }
.autocomplete-item .item-name { font-weight: 600; }
.autocomplete-item .item-details { font-size: 0.9em; color: var(--text-muted); }
.autocomplete-item.active .item-details, .autocomplete-item.active .item-name { color: var(--primary-color); }

/* --- Pagination --- */
.pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}
.pagination-btn {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    color: var(--text-muted);
}
.pagination-btn:hover:not(:disabled) {
    background-color: var(--primary-color-light);
    color: var(--primary-color);
    border-color: var(--primary-color-light);
}
.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: var(--background-color);
}
.page-info {
    font-weight: 500;
    color: var(--text-muted);
    min-width: 100px;
    text-align: center;
}

/* --- Print Styles --- */
@page {
    margin: 0;
}
@media print {
    body { background-color: #fff; }
    .no-print { display: none !important; }
    .page {
        width: 100%; max-width: 100%; min-height: initial; box-shadow: none;
        margin: 0; border: none; border-radius: 0;
        padding: 10mm; /* Giảm lề khi in */
    }
    .quote-summary {
        page-break-inside: avoid;
    }
    th, .category-header td { background-color: #f2f2f2 !important; -webkit-print-color-adjust: exact; }
    input, textarea { border: none !important; color: #000 !important; padding: 2px 0; }
    td, th { padding: 8px 4px; font-size: 9.5pt; }
    .actions, .actions-col { display: none; }
}

/* --- Responsive Design --- */
@media screen and (max-width: 992px) {
    .page { width: 100%; padding: 30px; min-height: unset; margin: 0; }
    #app-container { padding: 1.5rem; }
    .management-content { grid-template-columns: 1fr; }
    .management-form-container { position: static; }
    .management-list-container { margin-top: 2rem; }
}
@media screen and (max-width: 768px) {
    #app-container { padding: 1rem; }
    .main-header { padding: 0 1rem; }
    #user-name { display: none; }
    #logout-btn span { display: none; }
    #logout-btn { padding: 8px; }
    .page { border-radius: 0; padding: 15px; }
    .quote-header { flex-direction: column; gap: 20px; }
    .quote-title, .company-info { text-align: left; }
    .quote-title h2, .quote-title p { text-align: left; justify-content: flex-start; }
    .client-info-grid { grid-template-columns: 1fr; }
    .client-info-grid label { text-align: left; }
    .controls { flex-wrap: wrap; }
    .list-view-header { flex-direction: column; align-items: stretch; gap: 1rem; }
    .list-view-actions { flex-direction: column; width: 100%; align-items: stretch; }
    .quote-card { flex-direction: column; align-items: flex-start; }
    .quote-card-actions { width: 100%; display: grid; grid-template-columns: 1fr 1fr; }
    #editor-title-bar { flex-direction: column; align-items: flex-start; gap: 0.5rem; padding: 1rem; }
    .managed-item-card { grid-template-columns: 1fr; text-align: center; }
    .item-card-details { text-align: center; }
    .item-card-actions { justify-content: center; }
    .login-box { padding: 2rem; width: 100%; margin: 1rem; box-sizing: border-box; }
    #search-quotes-input, #search-managed-items-input { min-width: unset; }
    .management-list-header { flex-direction: column; align-items: stretch; gap: 1rem; }
    .quote-summary { width: 100%; }
    
    /* Responsive Table */
    #quote-table thead { display: none; }
    #quote-table tr { 
        display: block; margin-bottom: 1.5rem; border: 1px solid var(--border-color); 
        border-radius: var(--border-radius); padding: 1rem; box-shadow: var(--shadow-sm);
    }
    #quote-table td { 
        display: flex; justify-content: space-between; align-items: center; 
        text-align: right; padding: 10px 0; border: none; border-bottom: 1px dashed #f0f0f0; 
    }
    #quote-table tr td:last-child { border-bottom: none; }
    #quote-table td:before { 
        content: attr(data-label); text-align: left; font-weight: 600; color: var(--text-color);
    }
    #quote-table td.actions { justify-content: center; padding-top: 1rem; }
    #quote-table td[data-label="Nội dung"] { flex-direction: column; align-items: stretch; gap: 1rem;}
    #quote-table td[data-label="Nội dung"]:before { margin-bottom: 10px; }
    
    /* Special handling for category headers in mobile */
    #quote-table tr.category-header {
        display: flex;
        flex-flow: row wrap;
        justify-content: space-between;
        align-items: center;
    }
    #quote-table .category-header td {
        display: block;
        border: none;
        padding: 0;
        width: auto;
    }
    #quote-table .category-header td[colspan="6"] {
        flex: 1 1 auto;
    }
    #quote-table .category-header td.actions {
        flex: 0 0 auto;
        padding-left: 10px;
    }
    #quote-table .category-header .category-total {
        order: 99; /* Put it at the end */
        width: 100%;
        margin-top: 0.75rem;
        padding-top: 0.75rem;
        border-top: 1px dashed var(--border-color);
        display: flex;
        justify-content: space-between;
        font-size: 1em;
    }
    #quote-table .category-header .category-total::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-color);
    }
    
    .quote-footer { flex-direction: column; }
    .signature { text-align: left; margin-top: 20px; }
}