:root {
    --color-bg: #eef3fb;
    --color-surface: #ffffff;
    --color-border: #d7e2f2;
    --color-text: #101a2e;
    --color-text-muted: #5b6b85;
    --color-accent: #2f6fed;
    --color-accent-contrast: #ffffff;
    --color-line: rgba(47, 111, 237, 0.07);
    --color-icon-chip-bg: #ffffff;
    --color-icon-chip-border: rgba(16, 26, 46, 0.08);
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(16, 26, 46, 0.06), 0 1px 1px rgba(16, 26, 46, 0.04);
    --shadow-md: 0 4px 14px rgba(16, 26, 46, 0.10);
    --spacing-unit: 8px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0b1220;
        --color-surface: #141c30;
        --color-border: #26314a;
        --color-text: #e7ecf5;
        --color-text-muted: #8a98b5;
        --color-accent: #6ea8fe;
        --color-accent-contrast: #0b1220;
        --color-line: rgba(110, 168, 254, 0.06);
        --color-icon-chip-bg: #f4f7fc;
        --color-icon-chip-border: rgba(0, 0, 0, 0.06);
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
        --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    }
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    color: var(--color-text);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--color-bg);
    background-image:
        repeating-linear-gradient(135deg, var(--color-line) 0, var(--color-line) 1px, transparent 1px, transparent 64px),
        repeating-linear-gradient(45deg, var(--color-line) 0, var(--color-line) 1px, transparent 1px, transparent 96px);
    background-attachment: fixed;
}

.page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
}

.site-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.site-header-right {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
}

.site-brand {
    color: var(--color-accent);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.site-main {
    flex: 1;
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 2);
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 4);
}

.site-footer {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.site-footer a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}

.site-footer a:hover {
    color: var(--color-accent);
}

/* ----- Panels ----- */
.panel-title {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    margin: 0 0 calc(var(--spacing-unit) * 2) 0;
}

.loading-message,
.empty-message,
.locked-message {
    color: var(--color-text-muted);
}

.icon-chip {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-icon-chip-bg);
    border: 1px solid var(--color-icon-chip-border);
    border-radius: calc(var(--radius-md) / 1.5);
    padding: calc(var(--spacing-unit) * 0.75);
    flex-shrink: 0;
}

.icon-chip-sm {
    padding: calc(var(--spacing-unit) * 0.5);
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: calc(var(--spacing-unit) * 2);
}

.tool-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-unit);
    padding: calc(var(--spacing-unit) * 2);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
    transition: transform 0.1s ease, box-shadow 0.1s ease;
    min-height: 44px;
}

.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tool-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
    display: block;
}

.tool-name {
    font-size: 0.85rem;
    text-align: center;
    word-break: break-word;
}

.locked-panel {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-unit);
    padding: calc(var(--spacing-unit) * 3);
    background: var(--color-surface);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
}

.key-form {
    display: flex;
    gap: var(--spacing-unit);
    flex-wrap: wrap;
}

.key-form input[type="password"] {
    padding: calc(var(--spacing-unit) * 1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    min-width: 200px;
}

.key-form button,
.logout-link {
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
    border: none;
    border-radius: var(--radius-md);
    background: var(--color-accent);
    color: var(--color-accent-contrast);
    cursor: pointer;
    font-weight: 600;
}

.logout-form {
    margin-top: calc(var(--spacing-unit) * 2);
}

.logout-link {
    background: transparent;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
    font-weight: 400;
}

/* ----- Projects ----- */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: calc(var(--spacing-unit) * 2);
}

.project-card {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 0.5);
    padding: calc(var(--spacing-unit) * 2);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
}

.project-card-link:hover {
    box-shadow: var(--shadow-md);
}

.project-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
    display: block;
}

.project-title {
    font-weight: 600;
}

.project-description {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ----- Mobile ----- */
@media (max-width: 600px) {
    .site-header {
        padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2);
    }

    .site-title {
        font-size: 1.05rem;
    }

    .tool-grid {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    }

    .tool-icon {
        width: 32px;
        height: 32px;
    }
}

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;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}