/* ============================================
   Ellipse Software — Design System
   Space-inspired theme with orbital accents
   ============================================ */

/* --- Design Tokens --- */
:root {
    --color-bg: #07071a;
    --color-surface: #0f0f2e;
    --color-surface-raised: #181845;
    --color-border: rgba(139, 92, 246, .15);
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-text-heading: #f8fafc;
    --color-primary: #6366f1;
    --color-primary-hover: #818cf8;
    --color-secondary: #8b5cf6;
    --color-accent: #06b6d4;
    --color-accent-hover: #22d3ee;
    --color-danger: #ef4444;
    --color-success: #22c55e;
    --color-gradient: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    --color-gradient-subtle: linear-gradient(135deg, rgba(99, 102, 241, .12), rgba(139, 92, 246, .12));

    --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: "Space Grotesk", var(--font-body);
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, .4);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, .5);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, .6);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, .15);

    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    --container-max: 72rem;
    --content-max: 48rem;

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

img, svg {
    display: block;
    max-width: 100%;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover,
a:focus-visible {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text-heading);
    line-height: 1.25;
    font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }

h1:focus { outline: none; }

p + p { margin-top: var(--space-md); }

strong { color: var(--color-text-heading); }

code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--color-surface-raised);
    padding: 0.15em 0.4em;
    border-radius: var(--radius-sm);
    color: var(--color-accent);
}

pre {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    overflow-x: auto;
    font-size: 0.875rem;
    line-height: 1.6;
}

pre code {
    background: none;
    padding: 0;
    color: var(--color-text);
}

blockquote {
    border-left: 3px solid var(--color-primary);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-lg) 0;
    background: var(--color-gradient-subtle);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--color-text-muted);
    font-style: italic;
}

blockquote p { margin: 0; }

hr {
    border: none;
    height: 1px;
    background: var(--color-border);
    margin: var(--space-2xl) 0;
}

ul, ol {
    padding-left: var(--space-lg);
}

li + li {
    margin-top: var(--space-sm);
}

/* --- Utilities --- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--space-lg);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.625rem 1.25rem;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.4;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover { text-decoration: none; }

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--color-gradient);
    color: #fff;
    border-color: transparent;
}

.btn-primary:hover {
    opacity: 0.9;
    box-shadow: var(--shadow-glow);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover {
    background: rgba(99, 102, 241, .1);
    color: var(--color-primary-hover);
}

.btn-danger {
    background: var(--color-danger);
    color: #fff;
}

.btn-danger:hover {
    opacity: 0.9;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

/* --- Forms --- */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-heading);
}

.form-input,
.form-textarea,
.form-select {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    padding: 0.625rem 0.875rem;
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, .2);
}

.form-textarea {
    resize: vertical;
    min-height: 12rem;
    line-height: 1.6;
    font-family: var(--font-mono);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

/* --- Tags --- */
.tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2em 0.6em;
    border-radius: 9999px;
    background: var(--color-gradient-subtle);
    color: var(--color-primary);
    border: 1px solid rgba(99, 102, 241, .2);
}

/* --- Validation --- */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid var(--color-success);
}

.invalid {
    outline: 1px solid var(--color-danger);
}

/* --- EasyMDE Dark Theme --- */
.EasyMDEContainer {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.EasyMDEContainer .CodeMirror {
    background: var(--color-surface);
    color: var(--color-text);
    border: none;
    border-radius: 0;
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    padding: 0.75rem;
}

.EasyMDEContainer .CodeMirror-cursor {
    border-left-color: var(--color-text);
}

.EasyMDEContainer .CodeMirror-selected {
    background: rgba(99, 102, 241, .25);
}

.EasyMDEContainer .CodeMirror-focused .CodeMirror-selected {
    background: rgba(99, 102, 241, .35);
}

.EasyMDEContainer .CodeMirror .CodeMirror-code .cm-comment {
    background: transparent;
}

.EasyMDEContainer .CodeMirror .CodeMirror-code .cm-header {
    color: var(--color-text-heading);
}

.EasyMDEContainer .CodeMirror .CodeMirror-code .cm-link {
    color: var(--color-accent);
}

.EasyMDEContainer .CodeMirror .CodeMirror-code .cm-url {
    color: var(--color-text-muted);
}

.EasyMDEContainer .CodeMirror .CodeMirror-code .cm-string {
    color: var(--color-accent);
}

.EasyMDEContainer .CodeMirror .CodeMirror-code .cm-strong {
    color: var(--color-text-heading);
}

.EasyMDEContainer .editor-toolbar {
    background: var(--color-surface-raised);
    border-bottom: 1px solid var(--color-border);
    border-top: none;
    padding: 0.375rem 0.5rem;
    opacity: 1;
}

.EasyMDEContainer .editor-toolbar button {
    color: var(--color-text-muted) !important;
    border: none;
    border-radius: 0.375rem;
    transition: color 150ms ease, background 150ms ease;
}

.EasyMDEContainer .editor-toolbar button:hover {
    color: var(--color-text-heading) !important;
    background: rgba(99, 102, 241, .12);
}

.EasyMDEContainer .editor-toolbar button.active {
    color: var(--color-primary) !important;
    background: rgba(99, 102, 241, .15);
}

.EasyMDEContainer .editor-toolbar i.separator {
    border-left-color: var(--color-border);
    border-right: none;
}

.EasyMDEContainer .editor-toolbar.disabled-for-preview button:not(.no-disable) {
    opacity: 0.3;
}

.EasyMDEContainer .CodeMirror .CodeMirror-placeholder {
    color: var(--color-text-muted);
    opacity: 0.6;
}

.EasyMDEContainer .editor-preview {
    background: var(--color-surface);
    color: var(--color-text);
    font-family: var(--font-body);
    padding: 1rem;
}

.EasyMDEContainer .editor-preview pre {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 1rem;
}

.EasyMDEContainer .editor-preview code {
    background: var(--color-bg);
    color: var(--color-accent);
    font-family: var(--font-mono);
}

.EasyMDEContainer .editor-preview a {
    color: var(--color-accent);
}

.EasyMDEContainer .editor-preview-side {
    background: var(--color-surface);
    color: var(--color-text);
    border-left: 1px solid var(--color-border);
}

.validation-message {
    color: var(--color-danger);
    font-size: 0.8125rem;
}

/* --- Blazor error boundary --- */
.blazor-error-boundary {
    background: var(--color-danger);
    padding: var(--space-md) var(--space-lg);
    color: #fff;
    border-radius: var(--radius-md);
}

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

#blazor-error-ui {
    color-scheme: light only;
    background: #1e1b4b;
    bottom: 0;
    box-shadow: 0 -1px 4px rgba(0, 0, 0, .5);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    color: var(--color-text);
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

/* --- Animations --- */
@keyframes fade-in {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes orbit {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

@keyframes pulse-glow {
    0%, 100% { opacity: .4; }
    50%      { opacity: .8; }
}

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');