/* ========================================
   NexStar Night Mode Theme
   Optimized for low-light astronomical viewing
   ======================================== */

:root {
    /* Night mode color palette - very dark with red accent */
    --bg-darkest: #0a0a0c;
    --bg-dark: #0f0f12;
    --bg-panel: #131318;
    --bg-card: #1a1a22;
    --bg-hover: #252530;
    
    /* Red accent for night vision preservation */
    --accent-primary: #c53030;
    --accent-secondary: #9b2c2c;
    --accent-glow: rgba(197, 48, 48, 0.3);
    
    /* Muted text colors for night viewing */
    --text-primary: #d4d4d8;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --text-dim: #52525b;
    
    /* Status colors (dimmed for night) */
    --success: #16a34a;
    --warning: #ca8a04;
    --error: #dc2626;
    --info: #2563eb;
    
    /* Borders and shadows */
    --border-color: #27272a;
    --border-subtle: #1f1f23;
    --shadow-glow: 0 0 20px rgba(197, 48, 48, 0.1);
}

html, body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-darkest);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
}

h1:focus {
    outline: none;
}

/* Links */
a, .btn-link {
    color: var(--accent-primary);
    transition: color 0.2s ease;
}

a:hover, .btn-link:hover {
    color: #e53e3e;
}

/* Buttons */
.btn {
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
    border: none;
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    border: none;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #e53e3e 0%, #c53030 100%);
    transform: translateY(-1px);
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 2px var(--accent-glow);
    outline: none;
}

/* Form controls */
input, select, textarea {
    background-color: var(--bg-dark) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
    border-radius: 6px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--accent-primary) !important;
    box-shadow: 0 0 0 3px var(--accent-glow) !important;
}

input::placeholder {
    color: var(--text-muted) !important;
}

/* Range sliders */
input[type="range"] {
    accent-color: var(--accent-primary);
}

/* Content area */
.content {
    padding-top: 1.1rem;
    background-color: var(--bg-darkest);
}

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

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

.validation-message {
    color: var(--error);
}

/* Error UI */
#blazor-error-ui {
    background: var(--bg-panel);
    bottom: 0;
    box-shadow: 0 -1px 10px rgba(0, 0, 0, 0.5);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    color: var(--error);
    border-top: 1px solid var(--error);
}

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

.blazor-error-boundary {
    background: var(--error);
    padding: 1rem;
    color: white;
    border-radius: 8px;
}

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

/* Loading progress */
.loading-progress {
    position: relative;
    display: block;
    width: 8rem;
    height: 8rem;
    margin: 20vh auto 1rem auto;
}

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

.loading-progress circle:last-child {
    stroke: var(--accent-primary);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
    color: var(--text-primary);
}

.loading-progress-text:after {
    content: var(--blazor-load-percentage-text, "Loading");
}

code {
    color: var(--accent-primary);
    background: var(--bg-card);
    padding: 0.2em 0.4em;
    border-radius: 4px;
}

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

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Selection styling */
::selection {
    background: var(--accent-glow);
    color: white;
}