/* =========================================
   1. APP VARIABLES (2025 MOBILE STANDARD)
   ========================================= */
:root {
    --bg-app: #000000;
    --bg-surface: #121212;
    --bg-glass: rgba(20, 20, 20, 0.85);
    
    /* Vivid Accents */
    --primary: #5E6AD2;   /* Soft Indigo */
    --accent: #B0FB5D;    /* Lime Punch */
    --error: #FF4B4B;
    
    --text-main: #FFFFFF;
    --text-muted: #888888;
    
    --radius-xl: 32px;
    --radius-md: 16px;
    --radius-sm: 8px;
    
    --font-main: 'Plus Jakarta Sans', sans-serif;
    --font-code: 'JetBrains Mono', monospace;

    /* Safe Area for Notch/Home Bar */
    --safe-bottom: env(safe-area-inset-bottom, 20px);
}

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

body {
    background-color: var(--bg-app);
    color: var(--text-main);
    font-family: var(--font-main);
    height: 100dvh; /* Dynamic Height for Mobile */
    width: 100vw;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

/* --- BACKGROUND GRADIENT MESH --- */
.ambient-glow {
    position: absolute; width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(94, 106, 210, 0.15) 0%, transparent 70%);
    top: -100px; left: 50%; transform: translateX(-50%);
    z-index: 0; pointer-events: none;
}

/* =========================================
   2. APP HEADER (TOP BAR)
   ========================================= */
.app-header {
    height: 60px;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 10;
    background: transparent;
}

.brand-pill {
    background: rgba(255,255,255,0.1);
    padding: 6px 14px;
    border-radius: 100px;
    font-family: var(--font-code);
    font-size: 0.75rem;
    font-weight: 700;
    display: flex; align-items: center; gap: 8px;
    backdrop-filter: blur(10px);
}
.dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 8px var(--accent); }

.status-badge {
    font-size: 0.7rem; color: var(--text-muted);
    display: flex; align-items: center; gap: 6px;
}

/* =========================================
   3. MAIN VIEWFINDER (IMAGE AREA)
   ========================================= */
.viewfinder {
    flex: 1;
    margin: 10px 16px;
    border-radius: var(--radius-xl);
    background: #080808;
    border: 1px solid rgba(255,255,255,0.08);
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: inset 0 0 40px rgba(0,0,0,0.8);
}

/* Image Display */
#resultImage {
    width: 100%; height: 100%; object-fit: contain;
    opacity: 0; transition: opacity 0.6s ease;
    z-index: 2;
    display: none; /* Hidden initially */
}
#resultImage.loaded { opacity: 1; display: block; }

/* Empty State - FIXED CENTERING */
.empty-state {
    position: absolute; 
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    z-index: 1;
    padding: 20px;
}
.empty-icon {
    font-size: 2rem; margin-bottom: 12px; opacity: 0.2;
}
.empty-text {
    font-size: 0.9rem; color: var(--text-muted); 
    max-width: 250px; 
    margin: 0 auto;
    line-height: 1.5;
    text-align: center;
}

/* Loading Spinner */
.mobile-loader {
    display: none; width: 40px; height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s infinite linear;
    z-index: 3;
}

/* Grid Overlay Decoration */
.grid-deco {
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

/* DOWNLOAD BUTTON STYLE (NEW) */
.download-fab {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 48px; height: 48px;
    border-radius: 14px;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.2);
    color: white;
    display: none; /* Hidden by default */
    align-items: center; justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.2s ease;
}
.download-fab svg { width: 20px; height: 20px; fill: currentColor; }
.download-fab:active { transform: scale(0.9); background: rgba(255,255,255,0.1); }
.download-fab.visible { display: flex; animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); }

/* =========================================
   4. BOTTOM DOCK (CONTROLS)
   ========================================= */
.bottom-dock {
    background: var(--bg-surface);
    border-top-left-radius: 24px;
    border-top-right-radius: 24px;
    padding: 20px 20px calc(20px + var(--safe-bottom));
    z-index: 20;
    box-shadow: 0 -10px 40px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
}

/* Handle bar for visual cue */
.drag-handle {
    width: 40px; height: 4px; background: rgba(255,255,255,0.2);
    border-radius: 10px; margin: -8px auto 10px;
}

/* Horizontal Tags (Scrollable) */
.tag-scroll-area {
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 4px;
    -ms-overflow-style: none; scrollbar-width: none;
}
.tag-scroll-area::-webkit-scrollbar { display: none; }

.tag-chip {
    display: inline-block;
    font-size: 0.75rem;
    padding: 8px 16px;
    margin-right: 8px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 100px;
    color: var(--text-muted);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}
.tag-chip:active { transform: scale(0.95); }
.tag-chip.active-tag {
    background: var(--text-main); color: #000; border-color: #fff;
}

/* Input Group */
.input-group {
    display: flex; gap: 12px; align-items: flex-end;
}

.text-field-container {
    flex: 1;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 4px;
    transition: border-color 0.3s;
}
.text-field-container:focus-within { border-color: var(--primary); }

textarea {
    width: 100%; height: 50px;
    background: transparent; border: none; outline: none;
    padding: 14px;
    color: var(--text-main);
    font-family: var(--font-main); font-size: 1rem;
    resize: none;
}
textarea::placeholder { color: #555; }

/* The Big Button */
.btn-fab {
    width: 54px; height: 54px;
    border-radius: 18px;
    background: var(--primary);
    border: none;
    color: #fff;
    display: flex; justify-content: center; align-items: center;
    box-shadow: 0 4px 20px rgba(94, 106, 210, 0.4);
    cursor: pointer;
    transition: transform 0.2s, background 0.3s;
    flex-shrink: 0;
}
.btn-fab:active { transform: scale(0.9); }
.btn-fab svg { width: 24px; height: 24px; fill: currentColor; }
.btn-fab:disabled { background: #333; box-shadow: none; opacity: 0.5; }

/* =========================================
   5. STATUS OVERLAY
   ========================================= */
#statusMessage {
    position: absolute;
    top: 70px;
    left: 50%; transform: translateX(-50%);
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    color: #fff;
    opacity: 0; pointer-events: none;
    transition: opacity 0.3s;
    z-index: 50;
    border: 1px solid rgba(255,255,255,0.1);
}
#statusMessage.visible { opacity: 1; }

/* Animations */
@keyframes spin { 100% { transform: rotate(360deg); } }
@keyframes popIn { from { transform: scale(0); opacity: 0; } to { transform: scale(1); opacity: 1; } }