/**
 * @file styles.css
 * @author: Miguel Páramos (mparamos.com)
 * @description Defines the visual layout, typography, and interactive states for the Mixed Reality application.
 * Utilizes flexbox for responsive alignment and CSS gradients for vector-based UI elements.
 */

/* Register custom typography fonts */
@font-face {
    font-family: 'FlorenceSans';
    src: url('../font/sfflorencesans.ttf') format('truetype');
    font-weight: normal;
}

@font-face {
    font-family: 'FlorenceSans';
    src: url('../font/sfflorencesansblack.ttf') format('truetype');
    font-weight: bold;
}

/* Reset default margins and enforce full viewport sizing */
body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #000;
    font-family: sans-serif;
}

/* Main viewport container locking the z-index hierarchy */
#camera-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #555;
}

/* Hide raw video element; processing happens in memory and renders to canvas */
#videoElement { display: none; }

/* Ensure the 2D output canvas scales and mirrors horizontally to act as a physical mirror */
#output_canvas {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scaleX(-1);
}

/* Overlay 3D canvas on top of the 2D canvas, mirroring it synchronously */
#three_canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scaleX(-1);
    pointer-events: none; /* Allow click-through to underlying elements if necessary */
    z-index: 1;
}

/* UI toggle alignment and typography */
.toggle-group {
    display: flex;
    align-items: center;
    color: #fff;
    font-size: 14px;
}
.toggle-group input[type="checkbox"] {
    transform: scale(1.2);
    margin-right: 6px;
    cursor: pointer;
}
.toggle-group label { cursor: pointer; }

/* Grouping container for action buttons */
.button-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

/* Standard button styling with hover transitions */
button {
    padding: 8px 12px;
    border: none;
    border-radius: 5px;
    background: #007bff;
    color: white;
    cursor: pointer;
    font-size: 13px;
    font-weight: bold;
    transition: background 0.3s;
}
button:hover { background: #0056b3; }

/* Base styling for transient notification toast */
#toast {
    visibility: hidden;
    min-width: 250px;
    text-align: center;
    border-radius: 8px;
    padding: 12px;
    position: fixed;
    z-index: 20;
    left: 50%;
    bottom: 80px;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.4s, visibility 0.4s;
    font-weight: bold;
    color: #fff;
    background-color: #333;
}
#toast.show { visibility: visible; opacity: 1; }

/* Contextual severity classes for toast backgrounds */
#toast.toast-error { background-color: #f44336; }
#toast.toast-success { background-color: #2e7d32; }
#toast.toast-info { background-color: #0277bd; }

/* Anchored container for all control interfaces at the bottom of the screen */
.ui-container {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 10;
    display: flex;
    flex-direction: column;
}

/* Semi-transparent backdrop styling for slider panels */
.sliders-bar {
    width: 100%;
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(8px);
    display: none;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    padding: 12px 15px;
    gap: 20px;
    flex-wrap: wrap;
    border-bottom: 2px solid #00ff88;
}
.sliders-bar.active { display: flex; }

/* Section header within slider bars */
.sliders-title {
    width: 100%;
    text-align: center;
    color: #00ff88;
    font-family: 'FlorenceSans', sans-serif;
    font-size: 1.1rem;
    font-weight: bold;
    margin-bottom: 5px;
    border-bottom: 1px solid #333;
    padding-bottom: 5px;
}

/* Container locking label and input horizontally */
.slider-group {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    color: #e0e0e0;
    font-size: 0.85rem;
    font-family: 'FlorenceSans', sans-serif;
    font-weight: bold;
}

/* Custom accent styling for HTML5 range inputs */
.slider-group input[type="range"] {
    width: 100px;
    cursor: pointer;
    accent-color: #00ff88;
}

/* Dynamic value readout typography */
.slider-val {
    color: #00ff88;
    font-family: monospace;
}

/* Main action bar container */
.bottom-bar {
    width: 100%;
    background: rgba(30, 30, 30, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
    align-items: center;
    padding: 15px 10px;
    box-sizing: border-box;
    flex-wrap: wrap;
    gap: 10px;
}

/* Footer layout for credits and licensing */
.credits-bar {
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    padding: 8px 20px;
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    align-items: center;
    border-top: 1px solid #333;
    gap: 15px;
}

/* Branding logo constraints */
.credits-logo {
    height: 42px;
    width: auto;
    flex-shrink: 0;
}

/* Gradient typography for main brand title */
.credits-name {
    font-family: 'FlorenceSans', sans-serif;
    font-weight: bold;
    font-size: 1.2rem;
    background: linear-gradient(to right, #fff, #cccccc);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    padding-bottom: 4px;
    white-space: nowrap;
}

/* Decorative underline for brand title */
.credits-name::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, #00ff88, #0066ff);
}

/* Licensing typography alignment */
.credits-license {
    font-size: 0.75rem;
    color: #888;
    font-family: sans-serif;
    margin-left: auto;
    text-align: right;
    line-height: 1.4;
}

/* Link transitions and animations */
.credits-license a {
    color: #00ff88;
    text-decoration: none;
    display: inline-block;
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.credits-license a:hover {
    text-decoration: none;
    transform: scale(1.15);
    font-weight: bold;
    background: linear-gradient(90deg, #0066ff, #66b3ff, #0033cc, #0066ff);
    background-size: 300% auto;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: brilloAzul 4s linear infinite;
}

/* Continuous gradient animation keyframes */
@keyframes brilloAzul {
    0% { background-position: 0% center; }
    100% { background-position: 300% center; }
}

/* Media query for mobile responsiveness */
@media (max-width: 768px) {
    .credits-bar {
        flex-direction: column;
        text-align: center;
        padding: 12px;
        gap: 10px;
    }
    .credits-license {
        margin-left: 0;
        text-align: center;
    }
}

/* Landscape orientation block overlay */
#landscape-warning {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.95);
    color: white;
    z-index: 9999;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
    font-family: 'FlorenceSans', sans-serif;
}
#landscape-warning h2 { color: #00ff88; margin-bottom: 10px; }

/* Utilities extracted from inline HTML */
.camera-placeholder { position: absolute; font-size: 1.5em; z-index: -1; }
.secret-text { margin-top: 15px; color: #aaa; font-size: 0.9em; }
.btn-reset { background-color: #f44336; padding: 4px 8px; font-size: 11px; border-radius: 4px; border: none; color: white; cursor: pointer; height: 26px; font-weight: bold; }
.slider-short { width: 80px !important; }
.slider-med { width: 120px !important; }
.pb-5 { padding-bottom: 5px; }
.pl-10 { padding-left: 10px; }
.hidden-input { display: none; }

/* Wrapper to maintain title and flags in the same visual block */
.title-and-flags {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-shrink: 0;
}
.lang-flags {
    display: flex;
    gap: 8px;
}

/* Base geometry and interactivity for pure CSS flags */
.flag-btn {
    width: 32px;
    height: 22px;
    border: 2px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    padding: 0;
    outline: none;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.6);
    display: block;
}
.flag-btn:hover {
    transform: scale(1.15);
    border-color: #666;
}
.flag-btn.active {
    border-color: #00ff88;
    transform: scale(1.15);
    box-shadow: 0 0 10px rgba(0,255,136,0.7);
    z-index: 2;
}

/* Pure CSS Spanish Flag generation */
.flag-es {
    background: linear-gradient(to bottom, #c60b1e 25%, #ffc400 25%, #ffc400 75%, #c60b1e 75%);
}

/* Pure CSS French Flag generation */
.flag-fr {
    background: linear-gradient(to right, #002395 33.3%, #ffffff 33.3%, #ffffff 66.6%, #ed2939 66.6%);
}

/* Base setup for Hybrid EN/US Flag */
.flag-en {
    background: #fff;
}

/* Top-Left segment: US Flag approximation using repeating gradients */
.flag-en::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background:
        linear-gradient(to right, #3C3B6E 45%, transparent 45%) 0 0 / 100% 50% no-repeat,
        repeating-linear-gradient(to bottom, #B22234 0, #B22234 11.11%, #fff 11.11%, #fff 22.22%);
    clip-path: polygon(0 0, 100% 0, 0 100%);
}

/* Bottom-Right segment: UK Flag approximation via overlapping angled gradients */
.flag-en::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background:
        linear-gradient(to bottom, transparent 40%, #C8102E 40%, #C8102E 60%, transparent 60%),
        linear-gradient(to right, transparent 43%, #C8102E 43%, #C8102E 57%, transparent 57%),
        linear-gradient(to bottom, transparent 33%, #fff 33%, #fff 67%, transparent 67%),
        linear-gradient(to right, transparent 36%, #fff 36%, #fff 64%, transparent 64%),
        linear-gradient(35deg, transparent 46%, #C8102E 46%, #C8102E 54%, transparent 54%),
        linear-gradient(-35deg, transparent 46%, #C8102E 46%, #C8102E 54%, transparent 54%),
        linear-gradient(35deg, transparent 40%, #fff 40%, #fff 60%, transparent 60%),
        linear-gradient(-35deg, transparent 40%, #fff 40%, #fff 60%, transparent 60%),
        #012169;
    clip-path: polygon(100% 0, 100% 100%, 0 100%);
}

/* Dark diagonal separator for the hybrid flag */
.flag-en-separator {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to top left, transparent 47%, #222 47%, #222 53%, transparent 53%);
    z-index: 10;
    pointer-events: none;
}