/* ============================================
   AR VISITING CARD – STYLE SHEET
   Theme: Dark-tech with neon cyan/green accents
   ============================================ */

/* ---------- CSS VARIABLES ---------- */
:root {
    --bg-dark: #060a1a;
    --bg-card: rgba(8, 12, 36, 0.88);
    --neon-cyan: #00e5ff;
    --neon-green: #76ff03;
    --text-primary: #e8eaf6;
    --text-secondary: #90a4ae;
    --radius-lg: 20px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --glass-border: rgba(0, 229, 255, 0.18);
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Rajdhani', sans-serif;
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- RESET / BASE ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    overflow: hidden;
    width: 100%;
    height: 100%;
    font-family: var(--font-body);
    background: #000;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

body {
    position: fixed;
    inset: 0;
}

/* ── AR.js video & scene rendering ──
   AR.js injects a <video> and a <canvas>.
   These rules make sure they fill the screen on mobile. */
a-scene {
    position: fixed !important;
    top: 0; left: 0;
    width: 100% !important;
    height: 100% !important;
    z-index: 0;
}

/* AR.js dynamically created video — must be visible & fullscreen */
a-scene video,
#arjs-video {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    z-index: 0 !important;
    display: block !important;
    opacity: 1 !important;
    transform: none !important;
}

/* AR.js canvas overlay */
a-scene canvas.a-canvas {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    z-index: 1 !important;
    transform: none !important;
}


/* ============================================
   1.  LOADING SCREEN
   ============================================ */
#loading-screen {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader-content {
    text-align: center;
    position: relative;
}

.loader-content h2 {
    font-family: var(--font-heading);
    color: var(--neon-cyan);
    font-size: 1.15rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.loader-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Pulsing ring animation */
.pulse-ring {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 2px solid var(--neon-cyan);
    margin: 0 auto 24px;
    animation: pulseRing 1.8s ease-out infinite;
}

.pulse-ring.delay {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 0.5s;
}

@keyframes pulseRing {
    0%   { transform: scale(0.6); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

.pulse-ring.delay {
    left: 50%;
    transform: translateX(-50%) scale(0.6);
}
@keyframes pulseRingDelay {
    0%   { transform: translateX(-50%) scale(0.6); opacity: 1; }
    100% { transform: translateX(-50%) scale(1.5); opacity: 0; }
}
.pulse-ring.delay {
    animation-name: pulseRingDelay;
}


/* ============================================
   1b. CAMERA ERROR SCREEN
   ============================================ */
#camera-error {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    padding: 24px;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#camera-error.camera-error-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

#camera-error.camera-error-visible {
    opacity: 1;
    visibility: visible;
}

.error-content {
    max-width: 380px;
    text-align: center;
}

.error-icon {
    font-size: 2.8rem;
    margin-bottom: 12px;
}

.error-content h2 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: #ff5252;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.error-content > p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-bottom: 18px;
    line-height: 1.5;
}

.error-tips {
    text-align: left;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 20px;
}

.error-tips h3 {
    font-size: 0.82rem;
    color: var(--neon-cyan);
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}

.error-tips ul {
    padding-left: 16px;
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.7;
}

.error-tips li {
    margin-bottom: 4px;
}

.error-tips strong {
    color: var(--text-primary);
}

.retry-btn, .demo-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    margin: 0 6px 10px;
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s;
}

.retry-btn {
    background: rgba(0, 229, 255, 0.1);
    color: var(--neon-cyan);
}

.retry-btn:active {
    background: rgba(0, 229, 255, 0.2);
    box-shadow: 0 0 16px rgba(0, 229, 255, 0.2);
}

.demo-btn {
    background: rgba(118, 255, 3, 0.08);
    color: var(--neon-green);
    border-color: rgba(118, 255, 3, 0.2);
}

.demo-btn:active {
    background: rgba(118, 255, 3, 0.18);
    box-shadow: 0 0 16px rgba(118, 255, 3, 0.15);
}


/* ============================================
   2.  SCAN INSTRUCTION OVERLAY
   ============================================ */
#scan-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

#scan-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.scan-frame {
    width: 220px;
    height: 220px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: scanPulse 2.5s ease-in-out infinite;
}

@keyframes scanPulse {
    0%, 100% { transform: scale(1); }
    50%      { transform: scale(1.04); }
}

/* Corner bracket styling */
.corner {
    position: absolute;
    width: 36px;
    height: 36px;
    border-color: var(--neon-cyan);
    border-style: solid;
    border-width: 0;
}
.corner.tl { top: 0; left: 0; border-top-width: 3px; border-left-width: 3px; border-radius: 4px 0 0 0; }
.corner.tr { top: 0; right: 0; border-top-width: 3px; border-right-width: 3px; border-radius: 0 4px 0 0; }
.corner.bl { bottom: 0; left: 0; border-bottom-width: 3px; border-left-width: 3px; border-radius: 0 0 0 4px; }
.corner.br { bottom: 0; right: 0; border-bottom-width: 3px; border-right-width: 3px; border-radius: 0 0 4px 0; }

.scan-text {
    color: var(--text-primary);
    font-size: 0.95rem;
    text-align: center;
    line-height: 1.5;
    text-shadow: 0 0 12px rgba(0, 229, 255, 0.3);
}

.scan-text strong {
    color: var(--neon-cyan);
    font-family: var(--font-heading);
    font-size: 1rem;
    letter-spacing: 2px;
}

.marker-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 28px;
    color: var(--neon-cyan);
    font-size: 0.85rem;
    text-decoration: none;
    padding: 8px 18px;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    background: rgba(0, 229, 255, 0.06);
    pointer-events: all;
    transition: background 0.25s, box-shadow 0.25s;
}

.marker-link:active {
    background: rgba(0, 229, 255, 0.15);
    box-shadow: 0 0 16px rgba(0, 229, 255, 0.2);
}


/* ============================================
   3.  CARD OVERLAY (Bottom Sheet)
   ============================================ */
#card-overlay {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 500;
    max-height: 78vh;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    transition: transform 0.55s var(--transition-smooth),
                opacity 0.4s ease;
}

/* Hide / show states */
#card-overlay.card-hidden {
    transform: translateY(110%);
    opacity: 0;
    pointer-events: none;
}

#card-overlay.card-visible {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

/* Drag handle */
.drag-handle {
    width: 42px;
    height: 4px;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 2px;
    margin: 10px auto 4px;
}

/* The card itself – Glassmorphism */
.ar-card {
    background: var(--bg-card);
    backdrop-filter: blur(28px) saturate(1.4);
    -webkit-backdrop-filter: blur(28px) saturate(1.4);
    border: 1px solid var(--glass-border);
    border-bottom: none;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: 18px 20px 28px;
    position: relative;
    box-shadow:
        0 -4px 40px rgba(0, 229, 255, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* Close / minimize button */
.close-btn {
    position: absolute;
    top: 14px;
    right: 16px;
    width: 32px;
    height: 32px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.close-btn:active {
    background: rgba(255, 255, 255, 0.12);
    color: var(--neon-cyan);
}


/* ============================================
   4.  CARD HEADER – Profile Info
   ============================================ */
.card-header {
    text-align: center;
    padding-bottom: 14px;
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
    padding: 3px 12px;
    border-radius: 20px;
    background: rgba(118, 255, 3, 0.08);
    border: 1px solid rgba(118, 255, 3, 0.2);
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--neon-green);
    box-shadow: 0 0 8px rgba(118, 255, 3, 0.6);
    animation: statusBlink 2s ease-in-out infinite;
}

@keyframes statusBlink {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.4; }
}

.status-text {
    font-size: 0.7rem;
    color: var(--neon-green);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.name {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 3px;
    margin-bottom: 6px;
    text-shadow: 0 0 20px rgba(0, 229, 255, 0.25);
}

.title {
    font-size: 0.92rem;
    color: var(--neon-cyan);
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.subtitle {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 8px;
}

.location {
    font-size: 0.78rem;
    color: #7986cb;
}

.location i {
    margin-right: 4px;
    font-size: 0.72rem;
}


/* ============================================
   5.  NEON DIVIDER
   ============================================ */
.neon-divider {
    height: 1px;
    margin: 12px 0 16px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--neon-cyan) 30%,
        var(--neon-green) 70%,
        transparent 100%
    );
    opacity: 0.4;
}


/* ============================================
   6.  CONTACT BUTTONS GRID
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 16px;
}

.contact-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 12px 4px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: #fff;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform 0.2s, box-shadow 0.3s, background 0.25s, border-color 0.3s;
    -webkit-tap-highlight-color: transparent;
}

.contact-btn i {
    font-size: 1.15rem;
}

.contact-btn span {
    white-space: nowrap;
}

/* Tap feedback */
.contact-btn:active,
.contact-btn.tapped {
    transform: scale(0.93);
}

/* ── Individual button accent colors ── */
.btn-call        { --accent: #4caf50; }
.btn-whatsapp    { --accent: #25d366; }
.btn-email       { --accent: #ea4335; }
.btn-portfolio   { --accent: #00e5ff; }
.btn-github      { --accent: #c9d1d9; }
.btn-linkedin    { --accent: #0a66c2; }
.btn-leetcode    { --accent: #ffa116; }
.btn-instagram   { --accent: #e1306c; }

.contact-btn i {
    color: var(--accent);
    filter: drop-shadow(0 0 4px var(--accent));
}

.contact-btn:active,
.contact-btn.tapped {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent);
    box-shadow: 0 0 18px color-mix(in srgb, var(--accent) 25%, transparent);
}


/* ============================================
   7.  INFO TOGGLE & PANEL
   ============================================ */
.info-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    padding: 9px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    margin-bottom: 4px;
}

.info-toggle i {
    font-size: 0.65rem;
    transition: transform 0.35s var(--transition-smooth);
}

.info-toggle.open i {
    transform: rotate(180deg);
}

.info-toggle:active {
    background: rgba(255, 255, 255, 0.08);
    color: var(--neon-cyan);
}

/* Info panel collapse / expand */
.info-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.45s var(--transition-smooth),
                padding 0.35s ease;
    padding: 0 4px;
}

.info-panel.open {
    max-height: 200px;
    padding: 10px 4px 6px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.35;
}

.info-item i {
    color: var(--neon-cyan);
    font-size: 0.82rem;
    margin-top: 2px;
    flex-shrink: 0;
}


/* ============================================
   8.  VOICE INTRO BUTTON
   ============================================ */
.voice-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 11px;
    margin-top: 10px;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(118, 255, 3, 0.05));
    color: var(--neon-cyan);
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.3s;
}

.voice-btn i {
    font-size: 0.95rem;
}

.voice-btn:active {
    background: rgba(0, 229, 255, 0.15);
}

/* Speaking animation */
.voice-btn.speaking {
    animation: speakingPulse 0.7s ease-in-out infinite alternate;
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
}

@keyframes speakingPulse {
    from { border-color: var(--glass-border); }
    to   { border-color: var(--neon-cyan); }
}


/* ============================================
   9.  SCROLLBAR STYLING (card overlay)
   ============================================ */
#card-overlay::-webkit-scrollbar {
    width: 3px;
}
#card-overlay::-webkit-scrollbar-track {
    background: transparent;
}
#card-overlay::-webkit-scrollbar-thumb {
    background: rgba(0, 229, 255, 0.2);
    border-radius: 3px;
}


/* ============================================
   10. RESPONSIVE TWEAKS
   ============================================ */
@media (max-width: 360px) {
    .contact-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 6px;
    }
    .contact-btn {
        padding: 10px 2px;
        font-size: 0.6rem;
    }
    .contact-btn i {
        font-size: 1rem;
    }
    .name {
        font-size: 1.25rem;
    }
}

@media (min-width: 480px) {
    .ar-card {
        max-width: 420px;
        margin: 0 auto;
        border-radius: var(--radius-lg);
        border-bottom: 1px solid var(--glass-border);
        margin-bottom: 12px;
    }
    #card-overlay {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}


/* ============================================
   11. ANIMATIONS (entrance for card items)
   ============================================ */
.card-visible .card-header   { animation: fadeSlideUp 0.45s 0.1s both; }
.card-visible .neon-divider   { animation: fadeSlideUp 0.4s 0.2s both; }
.card-visible .contact-grid   { animation: fadeSlideUp 0.45s 0.25s both; }
.card-visible .info-toggle    { animation: fadeSlideUp 0.4s 0.35s both; }
.card-visible .voice-btn      { animation: fadeSlideUp 0.4s 0.4s both; }

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}