/* Variables & Themes */
:root {
    --deep-red: #B71C1C;
    --vibrant-orange: #FF6F00;
    --golden-yellow: #FFC107;
    
    /* Backgrounds */
    --bg-dark: #120A0A;
    --bg-gradient: linear-gradient(135deg, #1A0505 0%, #3e120d 40%, #5E2608 100%);
    
    /* Glassmorphism */
    --glass-bg: rgba(25, 10, 10, 0.4);
    --glass-border: rgba(255, 193, 7, 0.15);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    
    /* Text */
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-accent: var(--golden-yellow);
    
    /* Radii */
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-pill: 50px;
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-primary);
    height: 100vh;
    height: 100dvh; /* For mobile browsers with dynamic toolbars */
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1, h2, .brand-name {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
}

.hidden {
    opacity: 0 !important;
    pointer-events: none;
    visibility: hidden;
}

/* Splash Screen */
.splash-screen {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, #4A0000 0%, var(--deep-red) 50%, var(--vibrant-orange) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.splash-logo {
    width: 140px;
    height: auto;
    animation: pulseLogo 2s cubic-bezier(0.4, 0, 0.2, 1) infinite, fadeIn 1s ease-out;
    filter: drop-shadow(0 10px 20px rgba(0,0,0,0.5));
}

@keyframes pulseLogo {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

/* Main Layout */
#main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1.2rem 1rem 0.5rem;
    height: 100%;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

/* Header */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 1rem;
    flex-shrink: 0;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-logo {
    width: 55px;
    height: 55px;
    border-radius: 50%;
    object-fit: contain;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    padding: 2px;
}

.header-titles {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 0.75rem;
    letter-spacing: 3px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.header-title {
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1;
    margin: -2px 0 2px;
    text-shadow: 0 4px 12px rgba(0,0,0,0.5);
    letter-spacing: 1px;
}


/* Shared Button Styles */
.glass-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: var(--radius-pill);
    font-family: inherit;
    cursor: pointer;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: all 0.2s ease;
}

.action-btn {
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--vibrant-orange) 0%, #D84315 100%);
    color: white;
    border: none;
    border-radius: var(--radius-pill);
    box-shadow: 0 4px 15px rgba(255, 111, 0, 0.4);
    letter-spacing: 0.5px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-btn:active {
    transform: scale(0.96);
    box-shadow: 0 2px 8px rgba(255, 111, 0, 0.4);
}

.header-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

.instagram-btn {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    font-size: 0.82rem;
    font-weight: 600;
    background: linear-gradient(135deg, #833ab4, #fd1d1d, #fcb045);
    color: white;
    border-radius: var(--radius-pill);
    text-decoration: none;
    box-shadow: 0 3px 12px rgba(253, 29, 29, 0.35);
    letter-spacing: 0.3px;
    font-family: inherit;
    transition: all 0.2s ease;
}

.instagram-btn:active {
    transform: scale(0.96);
    box-shadow: 0 1px 6px rgba(253, 29, 29, 0.35);
}

/* Menu Viewer */
.menu-viewer {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    gap: 12px;
    margin-bottom: 5px;
}

.image-container {
    flex: 1;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.menu-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    position: absolute;
    top: 0;
    left: 0;
    user-select: none;
    -webkit-user-drag: none;
    will-change: transform;
}

.loading-spinner {
    position: absolute;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top: 3px solid var(--text-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: none;
    z-index: 100;
    pointer-events: none;
}

.loading-spinner.active {
    display: block;
}

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

/* Navigation Controls */
.nav-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-pill);
    padding: 6px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.nav-btn {
    padding: 12px 24px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
    font-family: inherit;
    border-radius: var(--radius-pill);
    transition: background 0.2s;
    cursor: pointer;
    flex: 1;
    max-width: 120px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.nav-btn:not(:disabled):active {
    background: rgba(255,255,255,0.1);
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.counter {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-accent);
    letter-spacing: 1px;
}

.next-indicator {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
    min-height: 1.2rem;
    flex-shrink: 0;
    letter-spacing: 0.5px;
}

/* Footer */
.footer {
    text-align: center;
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.4);
    padding: 5px 0 10px;
    flex-shrink: 0;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity 0.3s ease;
    padding: 1rem;
}

.modal-content {
    background: linear-gradient(145deg, #2A0D0D 0%, #150505 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 30px 24px;
    width: 100%;
    max-width: 360px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.5);
    transform: translateY(0) scale(1);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal.hidden .modal-content {
    transform: translateY(20px) scale(0.95);
}

.modal h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: -5px;
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255,255,255,0.1);
    border: none;
    color: var(--text-primary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 22px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: background 0.2s;
}

.close-btn:active {
    background: rgba(255,255,255,0.2);
}

.qr-container {
    background: #FFFFFF;
    padding: 12px;
    border-radius: var(--radius-md);
    width: 200px;
    height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.qr-image {
    max-width: 100%;
    max-height: 100%;
    display: block;
}

.url-share {
    display: flex;
    width: 100%;
    gap: 8px;
    background: rgba(0,0,0,0.4);
    padding: 6px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(255,255,255,0.1);
}

.url-share input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0 16px;
    font-family: inherit;
    font-size: 0.85rem;
    outline: none;
    min-width: 0; /* Prevents flex blowout */
}

.primary-btn {
    background: linear-gradient(135deg, var(--vibrant-orange) 0%, #D84315 100%);
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
    transition: transform 0.1s;
    white-space: nowrap;
}

.primary-btn:active {
    transform: scale(0.95);
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--text-accent);
    color: var(--text-accent);
    padding: 12px 24px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.9rem;
    width: 100%;
    text-align: center;
    transition: background 0.2s;
}

.secondary-btn:active {
    background: rgba(255, 193, 7, 0.15);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%) translateY(0);
    background: var(--text-primary);
    color: #000;
    padding: 12px 24px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.9rem;
    z-index: 2000;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.hidden {
    transform: translateX(-50%) translateY(30px);
}

/* ─── Lightbox ─────────────────────────────── */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity 0.25s ease;
}

.lightbox.hidden {
    opacity: 0;
    pointer-events: none;
}

.lightbox-close {
    position: fixed;
    top: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.4);
    background: rgba(0,0,0,0.6);
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.2s;
}

.lightbox-close:active {
    transform: scale(0.9);
    background: rgba(255,255,255,0.15);
}

.lightbox-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    touch-action: none;
}

.lightbox-img {
    max-width: 90%;
    max-height: 85%;
    object-fit: contain;
    transform-origin: center center;
    transition: transform 0.1s ease-out;
    user-select: none;
    -webkit-user-drag: none;
    cursor: zoom-in;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    will-change: transform;
}

/* Hint: tap cursor feedback */
.image-container {
    cursor: pointer;
}

/* ─── Zoom Controls Bar ─────────────────────── */
.modern-zoom-controls {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10002;
    display: flex;
    align-items: center;
    background: rgba(20, 20, 20, 0.85);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 100px;
    padding: 6px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.modern-zoom-controls.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateX(-50%) translateY(20px);
}

.m-zoom-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.m-zoom-btn:active {
    background: rgba(255, 255, 255, 0.1);
}

.m-zoom-indicator {
    padding: 0 16px;
    min-width: 60px;
    text-align: center;
}

.m-zoom-text {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--golden-yellow);
    letter-spacing: 0.5px;
    font-family: inherit;
}