/* --- GLOBAL VARIABLES & RESET --- */
:root {
    --phone-bg: #1a1a1a;
    --screen-bg: #000;
    --accent: #007AFF;
    --text: #fff;
    --app-header-bg: rgba(20, 20, 20, 0.95);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: #222;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1c1c1c 0%, #2a2a2a 100%);
}

/* --- THE PHONE CHASSIS --- */
.phone {
    width: 320px;
    height: 650px;
    background: var(--phone-bg);
    border-radius: 40px;
    border: 8px solid #333;
    box-shadow: 
        0 0 60px rgba(0,0,0,0.6), 
        inset 0 0 10px rgba(255,255,255,0.1);
    position: relative;
    overflow: hidden;
    color: var(--text);
}

/* Notch */
.notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background: #333;
    border-bottom-left-radius: 15px;
    border-bottom-right-radius: 15px;
    z-index: 100;
}

/* --- SCREEN --- */
.screen {
    width: 100%;
    height: 100%;
    background-color: #000;
    position: relative;
    padding-top: 40px;
    transition: filter 0.3s;
    background-size: cover;
    background-position: center;
}

/* Status Bar */
.status-bar {
    display: flex;
    justify-content: space-between;
    padding: 5px 25px;
    font-size: 12px;
    font-weight: 600;
    text-shadow: 0 1px 3px rgba(0,0,0,0.9);
    z-index: 20;
    position: relative;
}

/* --- APP GRID (Home Screen) --- */
.app-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    padding: 20px;
    margin-top: 20px;
}

.app-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.app-icon:active {
    transform: scale(0.9);
    opacity: 0.8;
}

.icon-box {
    width: 55px;
    height: 55px;
    border-radius: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    color: white;
    margin-bottom: 5px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.5);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
}

/* Icon Gradients */
.icon-browser { background: linear-gradient(135deg, #2980b9, #6dd5fa); }
.icon-gallery { background: linear-gradient(135deg, #ff7e5f, #feb47b); }
.icon-files { background: linear-gradient(135deg, #43cea2, #185a9d); }
.icon-settings { background: linear-gradient(135deg, #304352, #d7d2cc); }
.icon-code { background: linear-gradient(135deg, #111, #444); border: 1px solid #555; }

.app-name {
    font-size: 11px;
    text-shadow: 0 1px 3px rgba(0,0,0,1);
    font-weight: 500;
    letter-spacing: 0.3px;
}

/* --- APP WINDOW (The Modals) --- */
.app-window {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: #111;
    transition: top 0.4s cubic-bezier(0.86, 0, 0.07, 1);
    z-index: 50;
    display: flex;
    flex-direction: column;
}

.app-window.open {
    top: 0;
    border-radius: 0 0 40px 40px;
}

/* App Header with Back Button */
.app-header {
    padding: 45px 15px 15px;
    background: var(--app-header-bg);
    border-bottom: 1px solid #333;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 15px; 
    backdrop-filter: blur(10px);
}

.back-btn {
    font-size: 18px;
    color: var(--accent);
    cursor: pointer;
    padding: 5px;
    transition: opacity 0.2s;
}

.back-btn:active {
    opacity: 0.5;
}

.app-title {
    flex: 1;
    font-size: 16px;
}

.app-content {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
}

/* Custom Scrollbar for apps */
.app-content::-webkit-scrollbar {
    width: 4px;
}
.app-content::-webkit-scrollbar-thumb {
    background: #444;
    border-radius: 2px;
}

/* --- IMAGE VIEWER MODAL --- */
.image-modal {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    z-index: 200;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.image-modal.active {
    opacity: 1;
    pointer-events: all;
}

.image-modal img {
    max-width: 100%;
    max-height: 80%;
    object-fit: contain;
    box-shadow: 0 0 20px rgba(0,0,0,0.8);
}

.close-modal {
    position: absolute;
    top: 50px;
    right: 20px;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    background: rgba(50,50,50,0.5);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

/* --- GALLERY GRID STYLES --- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.gallery-item {
    width: 100%;
    height: 120px;
    border-radius: 8px;
    background-size: cover;
    background-position: center;
    background-color: #333;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.1s;
}

.gallery-item:active {
    transform: scale(0.98);
}

/* --- FILES & SETTINGS LIST STYLES --- */
.file-item, .setting-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid #222;
    color: #ccc;
    transition: background 0.2s;
}

.file-item:active, .setting-row:active {
    background: #222;
}

.file-left {
    display: flex;
    align-items: center;
}

.file-item i {
    margin-right: 15px;
    font-size: 24px;
    width: 30px;
    text-align: center;
}

.file-details {
    display: flex;
    flex-direction: column;
}

.file-name {
    font-size: 14px;
    color: #fff;
    margin-bottom: 2px;
}

.file-size {
    font-size: 11px;
    color: #666;
}

/* Toggle Switch Style */
.toggle {
    width: 44px;
    height: 24px;
    background: #333;
    border-radius: 20px;
    position: relative;
    transition: background 0.3s;
}

.toggle::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: #777;
    border-radius: 50%;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.toggle.active {
    background: #34c759;
}

.toggle.active::after {
    left: 22px;
    background: #fff;
}

/* --- TERMINAL (C++) STYLES --- */
.terminal-window {
    background-color: #0d0d0d !important;
}

.terminal-text {
    font-family: 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.4;
    color: #00ff00;
    white-space: pre-wrap;
    padding: 10px;
}

/* --- HOME BAR (Bottom) --- */
.home-bar {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 5px;
    background: #fff;
    border-radius: 10px;
    z-index: 200;
    cursor: pointer;
    opacity: 0.8;
    box-shadow: 0 1px 3px rgba(0,0,0,0.5);
    transition: width 0.2s, opacity 0.2s;
}

.home-bar:active {
    opacity: 0.5;
    width: 100px;
}