/*html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: #e1e6eb !important;  Soft light-gray dashboard background 
}

a, .btn-link {
    color: #006bb7;
}

.btn-primary {
    color: #fff;
    background-color: #1b6ec2;
    border-color: #1861ac;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

.content {
    padding-top: 1.1rem;
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}
*/


/*html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: #e1e6eb !important;  Soft light-gray dashboard background 
}

a, .btn-link {
    color: #006bb7;
}

.btn-primary {
    color: #fff;
    background-color: #1b6ec2;
    border-color: #1861ac;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

.content {
    padding-top: 1.1rem;
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}
*/


/* ============================================
   IDSolver - Modern Color Scheme & UI Refinements
   Professional, clean, and highly interactive
   Distinct table row hover (light blue)
   Fully compatible with second layout
   ============================================ */

/* ----- CSS Variables (Light Theme) ----- */
:root {
    --color-primary: #2563eb; /* vibrant blue */
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #eff6ff;
    --color-secondary: #475569;
    --color-accent: #0f172a;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #06b6d4;
    --bg-body: #f1f5f9; /* soft slate background */
    --bg-surface: #ffffff;
    --bg-elevated: #f8fafc;
    --bg-header: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --border-light: #e2e8f0;
    --border-focus: #2563eb;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.05);
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
}

/* ----- Base & Reset ----- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--bg-body) !important;
    color: var(--text-primary);
    line-height: 1.5;
    scroll-behavior: smooth;
}

/* ----- Typography ----- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

/* ----- Layout Containers ----- */
.content {
    padding: 1.5rem;
    max-width: 1600px;
    margin: 0 auto;
}

/* Card style for major sections */
.card,
.parameter-panel,
.data-panel,
.drag-drop-area {
    background: var(--bg-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: box-shadow var(--transition-normal);
}

    .card:hover,
    .parameter-panel:hover,
    .data-panel:hover {
        box-shadow: var(--shadow-md);
    }

/* ----- Header / Top Bar (IDSolver branding) ----- */
.app-header {
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-light);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    backdrop-filter: blur(0px);
    box-shadow: var(--shadow-sm);
}

    .app-header .logo-area {
        display: flex;
        align-items: baseline;
        gap: 1.5rem;
        flex-wrap: wrap;
    }

    .app-header h1 {
        font-size: 1.65rem;
        font-weight: 700;
        background: linear-gradient(135deg, var(--color-primary), #1e40af);
        background-clip: text;
        -webkit-background-clip: text;
        color: transparent;
        margin: 0;
        letter-spacing: -0.02em;
    }

.weld-selector-group {
    display: flex;
    gap: 1rem;
    background: var(--bg-elevated);
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    border: 1px solid var(--border-light);
}

    .weld-selector-group span {
        font-weight: 500;
        font-size: 0.9rem;
        color: var(--text-secondary);
        cursor: default;
    }

    .weld-selector-group .active-standard {
        color: var(--color-primary);
        font-weight: 600;
    }

.help-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

    .help-link:hover {
        color: var(--color-primary);
    }

/* Project toolbar */
.project-toolbar {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: 0.75rem 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

.project-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.project-badge {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.8rem;
    font-weight: 500;
}

.project-name {
    font-weight: 500;
    color: var(--text-primary);
}

.btn-load,
.btn-logout {
    padding: 0.4rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.btn-load {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
}

    .btn-load:hover {
        background: var(--bg-elevated);
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

.btn-logout {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
}

    .btn-logout:hover {
        background: #fee2e2;
        border-color: var(--color-danger);
        color: var(--color-danger);
    }

/* ----- Analysis Parameters Section ----- */
.analysis-section {
    background: var(--bg-surface);
    border-radius: var(--radius-xl);
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

    .analysis-section h3 {
        font-size: 1.25rem;
        margin-top: 0;
        margin-bottom: 1rem;
        font-weight: 600;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

.param-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    align-items: flex-end;
}

.param-item {
    flex: 1;
    min-width: 180px;
}

.param-label {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.03em;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.param-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* Input styling */
.form-control,
input[type="text"],
input[type="number"],
select,
.form-select {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    color: var(--text-primary);
    width: 100%;
}

    .form-control:focus,
    input:focus,
    select:focus {
        outline: none;
        border-color: var(--color-primary);
        box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    }

/* Step multiplier and Gamma input group */
.step-multiplier-input {
    max-width: 120px;
}

/* Step badge */
.step-indicator {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    padding: 0.25rem 1rem;
    border-radius: 2rem;
    font-weight: 600;
    font-size: 0.85rem;
    margin-left: 0.5rem;
}

/* ----- Modern Data Table (Weld Data) ----- */
.data-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-xl);
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
}

.weld-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.85rem;
}

    .weld-table thead tr {
        background: var(--bg-elevated);
    }

    .weld-table th {
        padding: 0.9rem 1rem;
        text-align: left;
        font-weight: 600;
        color: var(--text-secondary);
        border-bottom: 1.5px solid var(--border-light);
        font-size: 0.8rem;
        letter-spacing: 0.03em;
        text-transform: uppercase;
    }

    .weld-table td {
        padding: 0.9rem 1rem;
        border-bottom: 1px solid var(--border-light);
        color: var(--text-primary);
        vertical-align: middle;
    }

    /* ----- DISTINCT TABLE ROW HOVER (LIGHT BLUE, VERY NOTICEABLE) ----- */
    .weld-table tbody tr {
        transition: background-color 0.15s ease;
    }

        .weld-table tbody tr:hover {
            background-color: #dbeafe !important; /* Tailwind blue-100 - clearly distinct */
            cursor: pointer;
        }

        /* Even row base color (if any) but hover overrides */
        .weld-table tbody tr:nth-child(even) {
            background-color: var(--bg-elevated);
        }

            .weld-table tbody tr:nth-child(even):hover {
                background-color: #dbeafe !important;
            }

        /* Optional: left border accent on hover for extra visibility */
        .weld-table tbody tr:hover td:first-child {
            border-left: 3px solid var(--color-primary);
            padding-left: calc(1rem - 3px);
        }

    /* Table cell interactive elements */
    .weld-table .action-btn,
    .weld-table .btn-icon {
        transition: all 0.1s ease;
    }

        .weld-table .action-btn:hover,
        .weld-table .btn-icon:hover {
            transform: scale(1.05);
            color: var(--color-primary);
        }

/* Badge styles for table values */
.badge-calc {
    background: #e0f2fe;
    color: #0369a1;
    padding: 0.2rem 0.6rem;
    border-radius: 2rem;
    font-size: 0.7rem;
    font-weight: 600;
    display: inline-block;
}

.badge-percent {
    background: #dcfce7;
    color: #15803d;
    padding: 0.2rem 0.6rem;
    border-radius: 2rem;
    font-size: 0.7rem;
    font-weight: 600;
}

/* Type indicator (Manual, etc.) */
.type-badge {
    background: #f1f5f9;
    padding: 0.2rem 0.6rem;
    border-radius: 0.25rem;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: inline-block;
}

/* Action button 3D style */
.action-3d {
    background: transparent;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 0.3rem 0.8rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

    .action-3d:hover {
        background: var(--color-primary);
        color: white;
        border-color: var(--color-primary-dark);
        transform: scale(0.98);
    }

/* Drag Drop Weld Data Area */
.drag-drop-area {
    background: var(--bg-elevated);
    border: 2px dashed var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
    transition: all var(--transition-normal);
    cursor: grab;
}

    .drag-drop-area:hover {
        border-color: var(--color-primary);
        background-color: #eff6ff;
        border-style: solid;
    }

    .drag-drop-area:active {
        cursor: grabbing;
    }

    .drag-drop-area p {
        margin: 0;
        color: var(--text-muted);
        font-weight: 500;
    }

/* ----- Button Groups (Static Strength / Fatigue Life / Re-Verify / Download) ----- */
.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 1.5rem 0 1rem;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 1px solid transparent;
    font-size: 0.9rem;
}

.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary-dark);
    color: white;
}

    .btn-primary:hover {
        background-color: #1e40af;
        transform: translateY(-1px);
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    }

    .btn-primary:active {
        transform: translateY(0);
    }

.btn-outline {
    background: transparent;
    border-color: var(--border-light);
    color: var(--text-secondary);
}

    .btn-outline:hover {
        background-color: var(--color-primary-light);
        border-color: var(--color-primary);
        color: var(--color-primary-dark);
    }

.btn-secondary {
    background-color: var(--bg-elevated);
    border-color: var(--border-light);
    color: var(--text-primary);
}

    .btn-secondary:hover {
        background-color: #e2e8f0;
        border-color: #cbd5e1;
    }

/* Specific styles for Re-Verify and Download */
.btn-verify {
    background-color: #fef9c3;
    border-color: #eab308;
    color: #854d0e;
}

    .btn-verify:hover {
        background-color: #fde047;
        transform: translateY(-1px);
    }

.btn-download {
    background-color: #e0e7ff;
    border-color: #6366f1;
    color: #3730a3;
}

    .btn-download:hover {
        background-color: #c7d2fe;
        transform: translateY(-1px);
    }

/* User status footer */
.user-status {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

    .user-status span {
        font-weight: 500;
    }

/* Validation & error states */
.valid.modified:not([type=checkbox]) {
    outline: none;
    border-color: var(--color-success);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.invalid {
    outline: none;
    border-color: var(--color-danger) !important;
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2);
}

.validation-message {
    color: var(--color-danger);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

/* Blazor error boundary - modernized */
.blazor-error-boundary {
    background: linear-gradient(135deg, #7f1a1a, #b91c1c);
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
    border-radius: var(--radius-lg);
    margin: 1rem 0;
    box-shadow: var(--shadow-md);
}

    .blazor-error-boundary::after {
        content: "⚠️ An error has occurred. Please check the logs.";
    }

/* Darker border checkbox */
.darker-border-checkbox.form-check-input {
    border-color: var(--text-muted);
    accent-color: var(--color-primary);
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-elevated);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 10px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: #94a3b8;
    }

/* Responsive adjustments */
@media (max-width: 768px) {
    .content {
        padding: 1rem;
    }

    .param-grid {
        flex-direction: column;
        gap: 1rem;
    }

    .weld-table th,
    .weld-table td {
        padding: 0.6rem 0.75rem;
    }

    .project-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .app-header {
        flex-direction: column;
        align-items: stretch;
    }

    .button-group {
        flex-direction: column;
        align-items: stretch;
    }

        .button-group .btn {
            justify-content: center;
        }
}

/* Helper utilities */
.text-muted {
    color: var(--text-muted);
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mt-3 {
    margin-top: 1rem;
}

/* Links */
a, .btn-link {
    color: var(--color-primary);
    text-decoration: none;
}

    a:hover {
        color: var(--color-primary-dark);
        text-decoration: underline;
    }

    /* Focus outline for accessibility */
    button:focus-visible,
    a:focus-visible {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
    }

/* ========================================================
   GLOBAL MOBILE OVERRIDE - KILLS THE 100VH INVISIBLE WALL
======================================================== */
@media (max-width: 768px) {
    .page {
        flex-direction: column !important;
    }

    .sidebar {
        height: auto !important;
        min-height: 0 !important;
        width: 100% !important;
        position: relative !important;
    }

    .nav-scrollable {
        height: auto !important;
        min-height: 0 !important;
    }

    /* Ensures the hamburger menu is ALWAYS visible on phones */
    .top-row {
        display: flex !important;
    }
}