:root {
    --primary: #0d9488;
    --primary-hover: #2c665d;
    --secondary: #f0fdfa;
    --bg: #f8fafc;
    --text: #1e293b;
    --muted: #64748b;
    --border: #cbd5e1;
    --surface: #ffffff;
    --danger: #ef4444;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 4px 12px rgba(13, 148, 136, 0.08);
    --shadow-md: 0 10px 30px rgba(13, 148, 136, 0.12);
    --transition: all 0.25s ease;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/webfonts/Vazirmatn-Thin.woff2') format('woff2');
    font-weight: 100;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/webfonts/Vazirmatn-ExtraLight.woff2') format('woff2');
    font-weight: 200;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/webfonts/Vazirmatn-Light.woff2') format('woff2');
    font-weight: 300;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/webfonts/Vazirmatn-Regular.woff2') format('woff2');
    font-weight: 400;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/webfonts/Vazirmatn-Medium.woff2') format('woff2');
    font-weight: 500;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/webfonts/Vazirmatn-SemiBold.woff2') format('woff2');
    font-weight: 600;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/webfonts/Vazirmatn-Bold.woff2') format('woff2');
    font-weight: 700;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/webfonts/Vazirmatn-ExtraBold.woff2') format('woff2');
    font-weight: 800;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/webfonts/Vazirmatn-Black.woff2') format('woff2');
    font-weight: 900;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    direction: rtl;
    font-family: 'Vazirmatn', Tahoma, 'Segoe UI', Arial, sans-serif;
}

a {
    color: inherit;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-hover), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

h2 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
}

.muted {
    color: var(--muted);
}

.mt-4 {
    margin-top: 1.5rem;
}

.mt-2 {
    margin-top: 0.75rem;
}

button,
input,
select,
textarea {
    font: inherit;
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #fff;
    color: var(--text);
    padding: 0.72rem 0.82rem;
}

textarea {
    min-height: 7rem;
    resize: vertical;
}

label {
    display: grid;
    gap: 0.45rem;
    color: var(--muted);
    font-size: 0.92rem;
}

audio {
    width: min(18rem, 100%);
}

.page {
    display: block;
}

main {
    flex: 1;
    min-width: 0;
    width: 100%;
    padding-right: 0;
}

.sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 260px;
    height: 100vh;
    background: var(--surface);
    box-shadow: -4px 0 20px rgba(13, 148, 136, 0.15);
    z-index: 1001;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(100%);
    overflow-y: auto;
}

    .sidebar.open {
        transform: translateX(0);
    }

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(30, 41, 59, 0.5);
    backdrop-filter: blur(3px);
    z-index: 1000;
    opacity: 0;
    animation: fadeIn 0.3s forwards;
    display: block;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

.top-row {
    position: sticky;
    top: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 4rem;
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    border-bottom: 2px solid var(--primary-hover);
    backdrop-filter: blur(8px);
    color: #fff;
}

.top-row-title,
.top-row-start {
    color: #fff;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.top-row-title {
    font-weight: 700;
}

.top-row-actions {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.content {
    padding: 1.5rem;
}

.nav-head {
    min-height: 4rem;
    display: flex;
    align-items: center;
    padding: 0 1rem;
    background: rgba(0, 0, 0, 0.16);
}

.container-fluid {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.navbar-brand {
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
}

.navbar-toggler {
    display: none;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    background: transparent;
    color: #fff;
    width: 2.4rem;
    height: 2.4rem;
}

.nav-scrollable {
    height: calc(100vh - 4rem);
    overflow-y: auto;
    padding: 0.8rem 0;
}

.nav-item {
    padding: 0.18rem 0.9rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-height: 2.75rem;
    padding: 0.55rem 0.7rem;
    border-radius: 6px;
    color: #d8e8e2;
    text-decoration: none;
}

    .nav-link.active,
    .nav-link:hover {
        background: #25534b;
        color: #fff;
    }

.nav-icon {
    width: 1.4rem;
    text-align: center;
    font-weight: 700;
}

.nav-section {
    padding: 1rem 1.6rem 0.35rem;
    color: #a8c2ba;
    font-size: 0.78rem;
}

.surface,
.auth-panel {
    background: var(--surface);
    border: 1px solid #e2e8e5;
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.auth-panel {
    display: grid;
    gap: 1rem;
    max-width: 30rem;
    margin: 2rem auto;
}

.section-heading {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.2rem;
}

    .section-heading p {
        color: var(--muted);
    }

.search-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 2fr;
    gap: 1.2rem;
    align-items: end;
}

    .search-grid label {
        display: flex;
        flex-direction: column;
        gap: 0.4rem;
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--muted);
    }

    .search-grid .wide {
        grid-column: span 1;
    }

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.split-view {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 1.5rem;
    align-items: start;
}

.result-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.result-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #fff;
    transition: var(--transition);
    overflow: hidden;
}

    .result-card:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow);
        transform: translateY(-1px);
    }

    .result-card.selected {
        border-color: var(--primary);
        background: var(--secondary);
        box-shadow: var(--shadow);
    }

.result-row-btn {
    width: 100%;
    text-align: right;
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 0.8rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    font-family: inherit;
}

.word-text {
    font-weight: 600;
    color: var(--text);
}

.word-lang-badge {
    font-size: 0.75rem;
    background: var(--bg);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    color: var(--muted);
}

.result-card.selected .word-lang-badge {
    background: #fff;
}

.result-details,
.result-details-mobile {
    display: none;
}

.details-panel {
    align-self: flex-start;
    height: auto;
    padding: 6px;
    font-size: 0.85rem;
    position: sticky;
    top: 1.5rem;
}

.details-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.word-header-info h2 {
    font-size: 1.8rem;
    margin: 0;
    background: linear-gradient(135deg, var(--primary-hover), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.lang-subtitle {
    font-size: 0.9rem;
    color: var(--muted);
    font-weight: 500;
}

.detail-group {
    margin-bottom: 1.5rem;
    border-top: none;
    padding-top: 0.5rem;
}

.group-title {
    font-size: 1.1rem;
    margin: 0 0 0.8rem 0;
    color: var(--text);
}

.items-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.data-row {
    background: var(--bg);
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
}

.flex-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.relation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 1rem;
    cursor: pointer;
    transition: var(--transition);
}

    .relation-header:hover {
        background: #e8ecea;
    }

.relation-word {
    font-weight: 500;
    font-size: 0.95rem;
}

.lang-hint {
    font-size: 0.75rem;
    color: #888;
    margin-right: 0.4rem;
}

.synonym-details-box {
    margin: 0 1rem 1rem 1rem;
    padding: 1rem;
    border-right: 3px solid var(--primary);
    background: #fff;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
}

.inline-editor,
.add-strip {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
    background: #fff;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px dashed var(--border);
    margin-bottom: 1rem;
}

.flex-fill {
    flex: 1;
    min-width: 150px;
}

.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
    gap: 0.85rem;
}

.action-tile {
    display: grid;
    gap: 0.45rem;
    min-height: 8rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    text-decoration: none;
    background: #fbfcfb;
}

    .action-tile:hover {
        border-color: var(--primary);
        background: var(--secondary);
    }

    .action-tile span,
    .data-row small,
    .result-row small {
        color: var(--muted);
    }

.primary-button,
.secondary-button,
.danger-button,
.ghost-button,
.text-button,
.icon-button {
    border: 0;
    border-radius: var(--radius-sm);
    min-height: 2.55rem;
    padding: 0.55rem 0.95rem;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.primary-button {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
}

    .primary-button:hover {
        background: linear-gradient(135deg, var(--primary-hover), var(--primary));
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(44, 102, 93, 0.3);
    }

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

    .secondary-button:hover {
        background: #dbeae5;
    }

.danger-button {
    background: #fee2e2;
    color: var(--danger);
}

    .danger-button:hover {
        background: #fca5a5;
    }

.ghost-button {
    border: 1px solid #fff;
    background: transparent;
    color: #fff;
}

    .ghost-button:hover {
        background: rgba(255, 255, 255, 0.15);
        color: #fff;
    }

.text-button {
    background: transparent;
    color: var(--primary);
}

    .text-button:hover {
        text-decoration: underline;
    }

.text-danger {
    color: var(--danger);
}

.icon-button {
    width: 2.5rem;
    padding: 0;
    background: var(--primary);
    color: #fff;
    font-size: 1.1rem;
}

.primary-button:disabled,
.secondary-button:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.btn-sm {
    padding: 0.35rem 0.8rem;
    font-size: 0.85rem;
}

.btn-xs {
    padding: 0.1rem 0.4rem;
    font-size: 0.75rem;
}

.user-chip {
    max-width: 18rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: #fff;
}

.notice {
    border: 1px solid #d7c98d;
    border-radius: 6px;
    background: #fff8d9;
    color: #594a10;
    padding: 0.75rem 0.85rem;
    margin-top: 1rem;
}

    .notice.soft {
        border-color: var(--border);
        background: #f6f8f7;
        color: var(--muted);
    }

.mini-audio {
    height: 30px;
    width: 140px;
    outline: none;
}

.modern-input {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #fff;
    color: var(--text);
    padding: 0.7rem 0.85rem;
    transition: var(--transition);
    font-family: inherit;
}

    .modern-input:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(44, 102, 93, 0.15);
    }

.input-sm {
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
}

.autocomplete-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: stretch;
}

    .autocomplete-wrapper .autocomplete-input {
        width: 100%;
        border: none !important;
        outline: none !important;
        padding: 0.7rem 0.85rem;
        background: transparent;
        font-family: inherit;
    }

.autocomplete-suggestions {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 1000;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    list-style: none;
    padding: 0.4rem 0;
    margin: 0;
    max-height: 250px;
    overflow-y: auto;
    box-shadow: var(--shadow-md);
}

    .autocomplete-suggestions li {
        padding: 0.6rem 1rem;
        cursor: pointer;
        transition: background 0.15s ease;
        font-size: 0.95rem;
    }

        .autocomplete-suggestions li:hover {
            background: var(--secondary);
            color: var(--primary);
        }

.search-input-group {
    display: flex;
    flex-wrap: nowrap;
    align-items: stretch;
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #fff;
    transition: var(--transition);
}

    .search-input-group:focus-within {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(44, 102, 93, 0.15);
    }

    .search-input-group .search-input {
        flex: 1;
        min-width: 0;
        display: flex;
        align-items: stretch;
    }

        .search-input-group .search-input .autocomplete-input {
            border: none !important;
            outline: none !important;
            padding: 0.72rem 0.82rem;
            background: transparent;
            width: 100%;
            min-height: 2.55rem;
            height: 100%;
            border-radius: 0 !important;
        }

    .search-input-group .search-button {
        border: none;
        background: var(--primary);
        color: #fff;
        padding: 0 1rem;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        min-height: 2.55rem;
        font-size: 1.2rem;
        border-radius: 0 !important;
    }

        .search-input-group .search-button:hover:not(:disabled) {
            background: var(--primary-hover);
        }

        .search-input-group .search-button:disabled {
            opacity: 0.55;
            cursor: not-allowed;
        }

[dir="ltr"] .search-input-group .search-input .autocomplete-input {
    border-radius: 6px 0 0 6px !important;
}

[dir="ltr"] .search-input-group .search-button {
    border-radius: 0 6px 6px 0 !important;
}

[dir="rtl"] .search-input-group .search-input .autocomplete-input {
    border-radius: 0 6px 6px 0 !important;
}

[dir="rtl"] .search-input-group .search-button {
    border-radius: 6px 0 0 6px !important;
}

.menu-toggle-btn {
    background: transparent;
    color: #fff;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    padding: 0;
    display: flex !important;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

    .menu-toggle-btn:hover {
        color: rgba(255, 255, 255, 0.8);
        transform: scale(1.1);
    }

#blazor-error-ui {
    display: none;
    position: fixed;
    inset: auto 0 0 0;
    z-index: 1000;
    background: #fff8d9;
    color: var(--text);
    padding: 0.8rem 1rem;
    border-top: 1px solid #d7c98d;
}

.loading-progress {
    display: block;
    width: 6rem;
    height: 6rem;
    margin: 20vh auto 1rem;
}

    .loading-progress circle {
        fill: none;
        stroke-width: 0.6rem;
        transform-origin: 50% 50%;
        transform: rotate(-90deg);
    }

        .loading-progress circle:first-child {
            stroke: var(--border);
        }

        .loading-progress circle:last-child {
            stroke: var(--primary);
        }

.loading-progress-text {
    text-align: center;
}

    .loading-progress-text::after {
        content: "در حال بارگذاری";
    }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .page {
        display: block;
    }

    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
    }

    .navbar-toggler {
        display: inline-grid;
        place-items: center;
    }

    .collapse {
        display: none;
    }

    .nav-scrollable {
        height: auto;
    }

    .content {
        padding: 1rem;
    }

    .top-row {
        position: static;
    }

    .search-grid,
    .form-grid,
    .split-view {
        grid-template-columns: 1fr;
    }

    .inline-editor,
    .add-strip,
    .details-head,
    .data-row {
        align-items: stretch;
        flex-direction: column;
    }

    .split-view {
        grid-template-columns: 1fr;
    }

    .details-panel {
        display: none;
    }

    .result-details-mobile {
        display: block;
        border-top: 1px solid #eee;
        padding: 1rem;
        background: #fff;
        cursor: default;
    }

    .search-grid {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }

        .search-grid .wide {
            grid-column: 1fr;
        }
}

@media (max-width: 768px) {
    .split-view {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .details-panel {
        display: none;
    }

    .result-details {
        display: block;
    }

    .result-card.selected {
        border-color: #007bff;
        background-color: #f8f9fa;
    }
}

/* ---------- Search hero customization ---------- */
.surface.search-hero {
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    box-shadow: none !important;
}

.search-wrapper {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    padding: 1.5rem 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    width: 100%;
    box-sizing: border-box;
}

    .search-wrapper,
    .search-wrapper h1,
    .search-wrapper h2,
    .search-wrapper p,
    .search-wrapper label,
    .search-wrapper .section-heading p {
        color: #fff !important;
    }

        .search-wrapper h1 {
            background: none !important;
            -webkit-text-fill-color: #fff !important;
        }

        .search-wrapper .section-heading {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            margin-bottom: 1.5rem;
        }

            .search-wrapper .section-heading h1 {
                font-size: 1.8rem;
                margin: 0 0 0.3rem 0;
            }

            .search-wrapper .section-heading p {
                font-size: 1rem;
                opacity: 0.9;
            }

        .search-wrapper .modern-input,
        .search-wrapper .search-input-group {
            background: #fff !important;
            border: none !important;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
            color: var(--text) !important;
        }

        .search-wrapper .search-button {
            background: var(--primary-hover) !important;
            color: #fff !important;
            border: none !important;
        }

            .search-wrapper .search-button:hover:not(:disabled) {
                background: var(--text) !important;
            }

/* ---------- Page layout ---------- */
.page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.content {
    flex: 1;
}

.app-footer {
    margin-top: auto;
    text-align: center;
    padding: 1rem 0;
    font-size: 0.9rem;
    color: #6c757d;
    border-top: 1px solid #e9ecef;
}