/* =========================================================
   tryon.css — AR try-on camera overlay styles
   GHOSTFRAME Design System
   ========================================================= */

/* --- Font Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap');

/* ── Top bar ──────────────────────────────────────────── */
.gf-top-bar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 52px;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: rgba(0,0,0,0.75);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.gf-top-bar__back {
    display: flex;
    align-items: center;
    gap: 6px;
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.10em;
    text-transform: uppercase;
    transition: color 0.2s;
    min-height: 44px;
    font-family: var(--gf-font);
}
.gf-top-bar__back:hover { color: var(--gf-white); }

.gf-top-bar__title {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--gf-white);
    font-family: var(--gf-font);
}

.gf-top-bar__right { width: 80px; }

/* --- Design Tokens --- */
:root {
    --gf-font: 'Inter', 'DM Sans', 'Helvetica Neue', Arial, sans-serif;
    --gf-cyber-lime: #D4FF00;
    --gf-black: #000000;
    --gf-white: #FFFFFF;
    --gf-overlay-dark: rgba(0, 0, 0, 0.85);
    --gf-overlay-medium: rgba(0, 0, 0, 0.55);
    --gf-border-subtle: rgba(255, 255, 255, 0.1);
    --gf-text-muted: rgba(255, 255, 255, 0.6);
    --gf-radius: 0px;
    --gf-space-xs: 4px;
    --gf-space-sm: 8px;
    --gf-space-md: 16px;
    --gf-space-lg: 24px;
    --gf-space-xl: 32px;
    --gf-space-2xl: 40px;
    --gf-space-3xl: 48px;
}

/* ---------------------------
   Reset and base styles
----------------------------*/

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: transparent;
    font-family: var(--gf-font);
    font-weight: 400;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

/* ---------------------------
   Calibration overlay
----------------------------*/

#calibration-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

#calibration-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.calibration-box {
    background: #111;
    padding: var(--gf-space-lg) var(--gf-space-xl);
    border-radius: var(--gf-radius);
    text-align: center;
    color: var(--gf-white);
    font-family: var(--gf-font);
    font-size: 16px;
    font-weight: 400;
    border: 1px solid var(--gf-border-subtle);
}

#calibration-timer {
    display: block;
    margin-top: var(--gf-space-sm);
    font-size: 24px;
    font-weight: 700;
    color: var(--gf-cyber-lime);
}

/* ---------------------------
   Loading overlay
----------------------------*/

#loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9998;
    color: var(--gf-white);
    text-align: center;
    font-family: var(--gf-font);
}

.loader-spinner {
    width: 56px;
    height: 56px;
    border: 3px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    border-top-color: var(--gf-cyber-lime);
    animation: spin 1s ease-in-out infinite;
    margin-bottom: var(--gf-space-lg);
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

#loading-text {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--gf-space-sm);
    letter-spacing: -0.02em;
    font-family: var(--gf-font);
}

#loading-subtext {
    font-size: 14px;
    font-weight: 400;
    opacity: 0.6;
    max-width: 280px;
    line-height: 1.5;
    font-family: var(--gf-font);
}

/* ---------------------------
   Glasses info panel
----------------------------*/

#glasses-info {
    position: fixed;
    bottom: 80px;
    right: var(--gf-space-md);
    z-index: 25;
    padding: var(--gf-space-md);
    background: var(--gf-overlay-dark);
    color: var(--gf-white);
    font-family: var(--gf-font);
    font-size: 14px;
    font-weight: 400;
    line-height: 1.5;
    border-radius: var(--gf-radius);
    display: none;
    backdrop-filter: blur(16px);
    border: 1px solid var(--gf-border-subtle);
    max-width: 200px;
}

/* ---------------------------
   Controls panel (mobile)
----------------------------*/

#controls-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(0, 0, 0, 0.95);
    color: var(--gf-white);
    padding: var(--gf-space-lg) var(--gf-space-md);
    border-radius: var(--gf-radius);
    max-height: 70vh;
    overflow-y: auto;
    backdrop-filter: blur(24px);
    display: none;
    box-shadow: 0 -4px 32px rgba(0, 0, 0, 0.6);
    transform: translateY(100%);
    transition: transform 0.3s ease;
    font-family: var(--gf-font);
    border-top: 1px solid var(--gf-border-subtle);
}

#controls-panel.show {
    display: block;
    transform: translateY(0);
}

/* Toggle controls button (mobile) */

#toggle-controls {
    position: fixed;
    bottom: var(--gf-space-lg);
    right: var(--gf-space-lg);
    z-index: 99;
    background: rgba(0, 0, 0, 0.9);
    color: var(--gf-white);
    border: 1px solid var(--gf-border-subtle);
    border-radius: var(--gf-radius);
    width: 56px;
    height: 56px;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    display: none;
    font-family: var(--gf-font);
}

#toggle-controls:hover {
    background: rgba(212, 255, 0, 0.1);
    border-color: var(--gf-cyber-lime);
}

/* Slider groups */

.control-group {
    margin-bottom: var(--gf-space-lg);
    padding-bottom: var(--gf-space-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.control-group:last-child {
    border-bottom: none;
    margin-bottom: var(--gf-space-md);
}

.control-group h3 {
    margin: 0 0 var(--gf-space-md) 0;
    font-size: 14px;
    font-weight: 700;
    color: var(--gf-white);
    display: flex;
    align-items: center;
    gap: var(--gf-space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--gf-font);
}

/* Slider styles */

.slider-container {
    margin-bottom: var(--gf-space-md);
}

.slider-container label {
    display: block;
    margin-bottom: var(--gf-space-sm);
    font-size: 13px;
    font-weight: 400;
    color: var(--gf-text-muted);
    font-family: var(--gf-font);
}

.slider-container .value-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--gf-space-sm);
}

.slider-container .value-number {
    color: var(--gf-cyber-lime);
    font-weight: 700;
    font-size: 13px;
    font-family: var(--gf-font);
    background: rgba(212, 255, 0, 0.08);
    padding: var(--gf-space-xs) var(--gf-space-sm);
    border-radius: var(--gf-radius);
    min-width: 56px;
    text-align: center;
    border: 1px solid rgba(212, 255, 0, 0.2);
}

.slider-container input[type="range"] {
    width: 100%;
    height: 4px;
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 0;
    outline: none;
}

.slider-container input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 0;
    background: var(--gf-cyber-lime);
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow: 0 0 8px rgba(212, 255, 0, 0.3);
}

.slider-container input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--gf-white);
    transform: scale(1.15);
}

.slider-container input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 0;
    background: var(--gf-cyber-lime);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 8px rgba(212, 255, 0, 0.3);
}

/* Button group (mobile) */

.button-group {
    display: flex;
    gap: var(--gf-space-sm);
    margin-top: var(--gf-space-lg);
}

.button-group button {
    flex: 1;
    padding: var(--gf-space-md);
    border: 1px solid var(--gf-border-subtle);
    border-radius: var(--gf-radius);
    background: rgba(255, 255, 255, 0.06);
    color: var(--gf-white);
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    font-family: var(--gf-font);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--gf-space-sm);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.button-group button:hover {
    background: rgba(212, 255, 0, 0.1);
    border-color: var(--gf-cyber-lime);
    color: var(--gf-cyber-lime);
}

.button-group button.reset {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.15);
    color: var(--gf-text-muted);
}

.button-group button.reset:hover {
    background: rgba(255, 60, 60, 0.1);
    border-color: rgba(255, 60, 60, 0.4);
    color: #ff6060;
}

/* Calibrate button */

#calibrate-btn {
    width: 100%;
    margin-top: var(--gf-space-md);
    padding: var(--gf-space-md);
    background: rgba(212, 255, 0, 0.08);
    border: 1px solid rgba(212, 255, 0, 0.25);
    color: var(--gf-cyber-lime);
    border-radius: var(--gf-radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    font-family: var(--gf-font);
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

#calibrate-btn:hover {
    background: rgba(212, 255, 0, 0.15);
    border-color: var(--gf-cyber-lime);
}

/* Animations */

@keyframes fadeIn {
    0% {
        opacity: 0;
        transform: translateY(8px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

#glasses-info.show {
    display: block;
    animation: fadeIn 0.4s ease forwards;
}

/* ---------------------------
   Error overlay
----------------------------*/

#error-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.96);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10001;
    color: var(--gf-white);
    text-align: center;
    font-family: var(--gf-font);
    padding: var(--gf-space-xl);
}
#error-overlay.visible { display: flex; }

.error-icon  { font-size: 2rem; opacity: 0.5; margin-bottom: var(--gf-space-md); }
.error-title { font-size: 15px; font-weight: 700; letter-spacing: 0.06em; margin-bottom: var(--gf-space-sm); }
.error-message {
    font-size: 13px;
    color: var(--gf-text-muted);
    max-width: 300px;
    line-height: 1.7;
    margin-bottom: var(--gf-space-lg);
}
.error-actions {
    display: flex;
    gap: var(--gf-space-sm);
    flex-wrap: wrap;
    justify-content: center;
}
.error-btn {
    height: 42px;
    padding: 0 22px;
    border-radius: var(--gf-radius);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    cursor: pointer;
    border: none;
    transition: opacity 0.2s;
    font-family: var(--gf-font);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}
.error-btn:hover { opacity: 0.8; }
.error-btn--primary  { background: var(--gf-cyber-lime); color: var(--gf-black); }
.error-btn--secondary {
    background: transparent;
    border: 1px solid var(--gf-border-subtle);
    color: var(--gf-white);
}

/* #toggle-controls — floating adjust button */
#toggle-controls {
    position: fixed;
    bottom: var(--gf-space-lg);
    right: var(--gf-space-lg);
    z-index: 99;
    background: rgba(0,0,0,0.88);
    color: var(--gf-white);
    border: 1px solid var(--gf-border-subtle);
    border-radius: var(--gf-radius);
    height: 40px;
    padding: 0 16px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    font-family: var(--gf-font);
    transition: border-color 0.2s, background 0.2s;
}
#toggle-controls:hover {
    border-color: var(--gf-cyber-lime);
    background: rgba(212,255,0,0.08);
    color: var(--gf-cyber-lime);
}

.error-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    color: var(--gf-white);
    text-align: center;
    font-family: var(--gf-font);
    padding: var(--gf-space-xl);
}

.error-overlay h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 var(--gf-space-sm) 0;
    letter-spacing: -0.02em;
}

.error-overlay p {
    font-size: 14px;
    font-weight: 400;
    color: var(--gf-text-muted);
    margin: 0 0 var(--gf-space-lg) 0;
    max-width: 320px;
    line-height: 1.5;
}

.error-overlay button {
    padding: var(--gf-space-md) var(--gf-space-xl);
    background: var(--gf-cyber-lime);
    color: var(--gf-black);
    border: none;
    border-radius: var(--gf-radius);
    font-size: 14px;
    font-weight: 700;
    font-family: var(--gf-font);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    transition: opacity 0.2s ease;
}

.error-overlay button:hover {
    opacity: 0.85;
}

/* ---------------------------
   Capture button
----------------------------*/

.capture-btn {
    position: fixed;
    bottom: var(--gf-space-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 50;
    width: 64px;
    height: 64px;
    background: var(--gf-cyber-lime);
    border: none;
    border-radius: var(--gf-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s ease;
    box-shadow: 0 0 24px rgba(212, 255, 0, 0.25);
}

.capture-btn:hover {
    opacity: 0.85;
}

.capture-btn:active {
    opacity: 0.7;
}

/* ---------------------------
   Responsive: tablets and phones
----------------------------*/

@media (max-width: 768px) {
    #glasses-info {
        bottom: 88px;
        right: var(--gf-space-sm);
        padding: var(--gf-space-sm);
        font-size: 13px;
        max-width: 180px;
    }
    .button-group {
        flex-direction: column;
    }
    .button-group button {
        padding: var(--gf-space-md);
    }
    #calibrate-btn {
        padding: var(--gf-space-md);
    }
}

/* Small phones */

@media (max-width: 480px) {
    #controls-panel {
        padding: var(--gf-space-md);
    }
    .control-group h3 {
        font-size: 13px;
    }
    .slider-container label {
        font-size: 12px;
    }
    .slider-container .value-number {
        font-size: 12px;
        padding: var(--gf-space-xs) var(--gf-space-sm);
    }
}

/* Desktop layout */

@media (min-width: 769px) {
    #controls-panel {
        top: var(--gf-space-lg);
        left: var(--gf-space-lg);
        bottom: auto;
        right: auto;
        width: 280px;
        border-radius: var(--gf-radius);
        transform: none;
        max-height: 80vh;
    }
    #toggle-controls {
        top: var(--gf-space-lg);
        left: var(--gf-space-lg);
        bottom: auto;
        right: auto;
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    #glasses-info {
        bottom: var(--gf-space-lg);
        right: var(--gf-space-lg);
    }
}

/* ══════════════════════════════════════════════════════════
   START OVERLAY — shown on page load, user taps to begin
══════════════════════════════════════════════════════════ */
.start-overlay {
    position: fixed;
    inset: 0;
    z-index: 10002;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--gf-space-xl);
    font-family: var(--gf-font);
}

.start-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--gf-space-md);
    max-width: 320px;
    width: 100%;
}

.start-brand {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.35);
    margin-bottom: var(--gf-space-sm);
}

.start-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--gf-white);
    line-height: 1.2;
}

.start-desc {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    line-height: 1.6;
    margin: 0;
    font-weight: 400;
}

.start-btn {
    width: 100%;
    margin-top: var(--gf-space-sm);
    padding: 14px var(--gf-space-xl);
    background: var(--gf-cyber-lime);
    color: var(--gf-black);
    border: none;
    cursor: pointer;
    font-family: var(--gf-font);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: opacity 0.2s;
    min-height: 48px;
}
.start-btn:hover  { opacity: 0.88; }
.start-btn:active { opacity: 0.75; }

.start-back {
    font-size: 11px;
    color: rgba(255,255,255,0.3);
    text-decoration: none;
    letter-spacing: 0.06em;
    transition: color 0.2s;
}
.start-back:hover { color: rgba(255,255,255,0.6); }

/* ── Screenshot button ── */
#screenshot-btn {
    position: fixed;
    bottom: var(--gf-space-lg);
    left: var(--gf-space-lg);
    z-index: 99;
    background: rgba(0,0,0,0.88);
    color: var(--gf-white);
    border: 1px solid var(--gf-border-subtle);
    border-radius: var(--gf-radius);
    width: 40px;
    height: 40px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    transition: border-color 0.2s, background 0.2s;
    padding: 0;
}
#screenshot-btn:hover {
    border-color: var(--gf-cyber-lime);
    background: rgba(212,255,0,0.08);
    color: var(--gf-cyber-lime);
}
@media (min-width: 769px) {
    #screenshot-btn {
        top: var(--gf-space-lg);
        right: var(--gf-space-lg);
        bottom: auto;
        left: auto;
        width: 48px;
        height: 48px;
    }
}

/* ── Mobile safe-area padding (iPhone notch/home indicator) ── */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .start-overlay   { padding-bottom: max(var(--gf-space-xl), env(safe-area-inset-bottom)); }
    #controls-panel  { padding-bottom: max(var(--gf-space-lg), env(safe-area-inset-bottom)); }
    #toggle-controls { bottom: max(var(--gf-space-lg), calc(env(safe-area-inset-bottom) + 8px)); }
    #screenshot-btn  { bottom: max(var(--gf-space-lg), calc(env(safe-area-inset-bottom) + 8px)); }
}