/* Vector Calculator - Component Styles */

:root {
    --vc-tool: #0284c7;
    --vc-tool-dark: #0369a1;
    --vc-gradient: linear-gradient(135deg, #0284c7 0%, #0ea5e9 100%);
    --vc-light: #e0f2fe;
}
[data-theme="dark"] {
    --vc-light: rgba(2, 132, 199, 0.15);
}

/* ===== Mode Toggle ===== */
.vc-mode-toggle {
    display: flex;
    flex-wrap: wrap;
    border: 1.5px solid var(--border);
    border-radius: 0.5rem;
    overflow: hidden;
    margin-bottom: 1rem;
}
.vc-mode-btn {
    flex: 1 1 auto;
    min-width: 0;
    padding: 0.5rem 0.25rem;
    font-weight: 600;
    font-size: 0.625rem;
    border: none;
    cursor: pointer;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transition: all 0.15s;
    font-family: var(--font-sans);
    text-align: center;
    white-space: nowrap;
}
.vc-mode-btn.active {
    background: var(--vc-gradient);
    color: #fff;
}
.vc-mode-btn:hover:not(.active) {
    background: var(--bg-tertiary);
}
.vc-mode-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
[data-theme="dark"] .vc-mode-btn { background: var(--bg-tertiary); }
[data-theme="dark"] .vc-mode-btn.active { background: var(--vc-gradient); color: #fff; }

/* ===== Dimension Toggle ===== */
.vc-dim-toggle {
    display: inline-flex;
    border: 1.5px solid var(--border);
    border-radius: 0.5rem;
    overflow: hidden;
    margin-bottom: 1rem;
}
.vc-dim-btn {
    padding: 0.4rem 1rem;
    font-weight: 600;
    font-size: 0.75rem;
    border: none;
    cursor: pointer;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transition: all 0.15s;
    font-family: var(--font-sans);
}
.vc-dim-btn.active {
    background: var(--vc-gradient);
    color: #fff;
}
.vc-dim-btn:hover:not(.active) {
    background: var(--bg-tertiary);
}
[data-theme="dark"] .vc-dim-btn { background: var(--bg-tertiary); }
[data-theme="dark"] .vc-dim-btn.active { background: var(--vc-gradient); color: #fff; }

/* ===== Vector Input Groups ===== */
.vc-vector-input {
    margin-bottom: 0.75rem;
}
.vc-vector-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}
.vc-vector-row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}
.vc-vector-row input {
    flex: 1;
    min-width: 0;
    padding: 0.5rem 0.5rem;
    font-size: 0.875rem;
    font-family: var(--font-mono);
    border: 1.5px solid var(--border);
    border-radius: 0.375rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.15s;
    text-align: center;
}
.vc-vector-row input:focus {
    outline: none;
    border-color: var(--vc-tool);
    box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.1);
}
.vc-comp-label {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-muted);
    min-width: 0.75rem;
    text-align: center;
}
.vc-z-field { display: block; }
.vc-z-field.hidden { display: none; }

/* ===== Scalar Input ===== */
.vc-scalar-input {
    margin-bottom: 0.75rem;
}
.vc-scalar-input input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-family: var(--font-mono);
    border: 1.5px solid var(--border);
    border-radius: 0.375rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.15s;
}
.vc-scalar-input input:focus {
    outline: none;
    border-color: var(--vc-tool);
    box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.1);
}

/* ===== Live Preview ===== */
.vc-preview {
    min-height: 2.5rem;
    padding: 0.5rem 0.75rem;
    border: 1.5px dashed var(--border);
    border-radius: 0.5rem;
    background: var(--bg-secondary);
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: auto;
}
.vc-preview .katex { font-size: 1em; max-width: 100%; }
.vc-preview .katex-display { margin: 0; overflow-x: auto; overflow-y: hidden; }
[data-theme="dark"] .vc-preview { background: var(--bg-tertiary); border-color: var(--border); }

/* ===== Output Tabs ===== */
.vc-output-tabs {
    display: flex;
    border: 1.5px solid var(--border);
    border-radius: 0.5rem;
    overflow: hidden;
}
.vc-output-tab {
    flex: 1;
    padding: 0.5rem;
    font-weight: 600;
    font-size: 0.8125rem;
    border: none;
    cursor: pointer;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transition: all 0.15s;
    font-family: var(--font-sans);
    text-align: center;
}
.vc-output-tab.active {
    background: var(--vc-gradient);
    color: #fff;
}
.vc-output-tab:hover:not(.active) {
    background: var(--bg-tertiary);
}
[data-theme="dark"] .vc-output-tab { background: var(--bg-tertiary); }
[data-theme="dark"] .vc-output-tab.active { background: var(--vc-gradient); color: #fff; }

/* ===== Panels ===== */
.vc-panel { display: none; flex: 1; min-height: 0; }
.vc-panel.active { display: flex; flex-direction: column; }

/* ===== Step-by-Step ===== */
.vc-step {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem;
    margin: 0.5rem 0;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    border-left: 3px solid var(--vc-tool);
    transition: background 0.15s;
}
.vc-step:hover { background: var(--bg-tertiary); }
.vc-step-number {
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    background: var(--vc-gradient);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6875rem;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 0.125rem;
}
.vc-step-content { flex: 1; min-width: 0; max-width: 100%; overflow: hidden; }
.vc-step-desc {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.375rem;
}
.vc-step-math {
    overflow-x: auto;
    overflow-y: hidden;
    padding: 0.25rem 0;
    max-width: 100%;
}
.vc-step-math .katex-display { margin: 0; overflow-x: auto; overflow-y: hidden; max-width: 100%; }
.vc-step-math .katex { font-size: 0.9em; max-width: 100%; }
[data-theme="dark"] .vc-step { background: var(--bg-tertiary); }

/* ===== Result Badge ===== */
.vc-result-badge {
    display: inline-block;
    background: var(--vc-gradient);
    color: #fff;
    padding: 0.2rem 0.625rem;
    border-radius: 0.75rem;
    font-size: 0.6875rem;
    font-weight: 600;
    margin-right: 0.375rem;
    margin-bottom: 0.375rem;
}

/* ===== Overflow Prevention ===== */
.tool-output-column { min-width: 0; }
.tool-result-card { min-width: 0; overflow: hidden; }
#vc-result-content { min-width: 0; overflow-x: auto; overflow-y: auto; }

/* ===== Result Section ===== */
.vc-result-section {
    padding: 1rem;
}
.vc-result-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    margin-top: 0.75rem;
}
.vc-result-math {
    font-size: 1.2rem;
    padding: 0.75rem 0;
    overflow-x: auto;
    max-width: 100%;
}
.vc-result-math .katex-display { margin: 0; overflow-x: auto; overflow-y: hidden; max-width: 100%; }
.vc-result-math .katex { max-width: 100%; }
.vc-result-vector {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    padding: 0.75rem 1rem;
    margin-top: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}
[data-theme="dark"] .vc-result-vector { background: var(--bg-tertiary); border-color: var(--border); }

/* ===== Steps Button ===== */
.vc-steps-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border: 1.5px solid var(--vc-tool);
    border-radius: 9999px;
    background: transparent;
    color: var(--vc-tool);
    cursor: pointer;
    transition: all 0.15s;
    margin-top: 0.75rem;
}
.vc-steps-btn:hover { background: var(--vc-tool); color: #fff; }
.vc-steps-btn.loading { opacity: 0.7; pointer-events: none; }

/* ===== Steps Container ===== */
.vc-steps-container {
    margin-top: 1rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    overflow: hidden;
}
.vc-steps-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: var(--vc-light);
    border-bottom: 1px solid var(--border);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--vc-tool);
}
[data-theme="dark"] .vc-steps-container { border-color: var(--border); }
[data-theme="dark"] .vc-steps-header { background: var(--vc-light); border-bottom-color: var(--border); }

/* ===== Error ===== */
.vc-error {
    background: #fef3c7;
    border: 1px solid #fbbf24;
    border-radius: 0.5rem;
    padding: 1.25rem;
    color: #92400e;
}
.vc-error h4 { margin: 0 0 0.5rem; font-size: 0.9375rem; font-weight: 700; }
.vc-error p { margin: 0; font-size: 0.8125rem; line-height: 1.6; }
[data-theme="dark"] .vc-error { background: rgba(251, 191, 36, 0.15); border-color: rgba(251, 191, 36, 0.3); color: #fbbf24; }

/* ===== Quick Examples ===== */
.vc-examples {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}
.vc-example-chip {
    padding: 0.3rem 0.625rem;
    font-size: 0.6875rem;
    font-weight: 500;
    border-radius: 2rem;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
    font-family: var(--font-mono);
}
.vc-example-chip:hover {
    background: var(--vc-light);
    color: var(--vc-tool);
    border-color: var(--vc-tool);
}
[data-theme="dark"] .vc-example-chip { background: var(--bg-tertiary); border-color: var(--border); color: var(--text-secondary); }
[data-theme="dark"] .vc-example-chip:hover { background: var(--vc-light); color: var(--vc-tool); }

/* ===== Educational Content ===== */
.vc-edu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.75rem;
    margin: 1rem 0;
}
.vc-edu-card {
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    border-left: 3px solid var(--vc-tool);
}
.vc-edu-card h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.375rem;
}
.vc-edu-card p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}
[data-theme="dark"] .vc-edu-card { background: var(--bg-tertiary); }

.vc-ops-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
    margin-top: 0.75rem;
}
.vc-ops-table th, .vc-ops-table td {
    padding: 0.5rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
.vc-ops-table th {
    font-weight: 600;
    color: var(--text-primary);
    background: var(--bg-secondary);
}
.vc-ops-table td {
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
}
[data-theme="dark"] .vc-ops-table th { background: var(--bg-tertiary); }

/* ===== Spinner ===== */
@keyframes vc-spin { to { transform: rotate(360deg); } }
.vc-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid var(--border);
    border-top-color: var(--vc-tool);
    border-radius: 50%;
    animation: vc-spin 0.6s linear infinite;
    display: inline-block;
}

/* ===== Separator ===== */
.vc-sep {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0.75rem 0;
}

/* ===== Animations ===== */
.vc-anim {
    opacity: 0;
    transform: translateY(1rem);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.vc-anim.vc-visible { opacity: 1; transform: translateY(0); }
.vc-anim-d1 { transition-delay: 0.1s; }
.vc-anim-d2 { transition-delay: 0.2s; }
.vc-anim-d3 { transition-delay: 0.3s; }
.vc-anim-d4 { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
    .vc-anim { opacity: 1; transform: none; transition: none; }
}

/* ===== Graph ===== */
#vc-graph-container { width: 100%; min-height: 440px; border-radius: 0.5rem; }

/* ===== Responsive ===== */
@media (max-width: 640px) {
    .vc-mode-toggle { flex-wrap: wrap; }
    .vc-mode-btn { flex: 1 1 calc(25% - 1px); font-size: 0.5625rem; padding: 0.4rem 0.125rem; }
    .vc-edu-grid { grid-template-columns: 1fr; }
    .vc-result-math { font-size: 1rem; }
    .vc-step-math .katex { font-size: 0.8em; }
    .vc-preview .katex { font-size: 0.85em; }
    .vc-vector-row input { padding: 0.4rem 0.25rem; font-size: 0.8125rem; }
}