/* Global Styles mimic Windows Dark Mode */
:root {
    --bg-dark: #1e1e1e;
    --bg-sidebar: #252526;
    --bg-input: #3c3c3c;
    --bg-panel: #252526;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --accent-color: #007acc; /* Visual Studio Blue / Windows Accent */
    --accent-hover: #0098ff;
    --border-color: #3e3e42;
    --success-color: #4CAF50;
    --warning-color: #e0a100;
    --danger-color: #e16259;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow: hidden; /* Prevent body scroll, use app container */
    height: 100vh;
}

.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.brand {
    padding: 20px;
    font-size: 1.2rem;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    color: #4CAF50; /* Android Green */
}

.nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    flex-grow: 1;
}

.nav-item {
    padding: 15px 20px;
    cursor: pointer;
    border-left: 3px solid transparent;
    transition: background 0.2s;
    color: var(--text-secondary);
}

.nav-item:hover {
    background-color: #37373d;
}

.nav-item.active {
    background-color: #37373d;
    border-left-color: var(--accent-color);
    color: var(--text-primary);
}

.nav-item i {
    width: 25px;
    text-align: center;
    margin-right: 10px;
}

.sidebar-footer {
    padding: 10px;
    text-align: center;
    color: #666;
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
}

/* Main Content */
.main-content {
    flex-grow: 1;
    padding: 30px;
    overflow-y: auto;
    background-color: var(--bg-dark);
}

.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-pane.active {
    display: block;
}

h2 {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    margin-top: 0;
    font-weight: 400;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

input[type="text"],
input[type="url"],
input[type="number"],
select {
    width: 100%;
    padding: 10px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: white;
    box-sizing: border-box; 
    /* Fix box model sticking out */
}

input:focus, select:focus {
    outline: 2px solid var(--accent-color);
    border-color: transparent;
}

.row {
    display: flex;
    gap: 20px;
}

.col {
    flex: 1;
}

/* Web Type Selector */
.type-selector {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.radio-card {
    flex: 1;
    cursor: pointer;
    position: relative;
}

.radio-card input {
    position: absolute;
    opacity: 0;
}

.card-content {
    background-color: var(--bg-input);
    border: 2px solid var(--border-color);
    padding: 20px;
    text-align: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.card-content i {
    display: block;
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--text-secondary);
}

.radio-card input:checked + .card-content {
    border-color: var(--accent-color);
    background-color: #2d2d30;
}

.radio-card input:checked + .card-content i {
    color: var(--accent-color);
}

/* File Upload */
.file-drop-area {
    border: 2px dashed var(--border-color);
    padding: 20px;
    text-align: center;
    position: relative;
    cursor: pointer;
}

.file-drop-area:hover {
    background-color: #2d2d30;
}

.file-input {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    opacity: 0;
    cursor: pointer;
}

/* Permissions Grid */
.permissions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.perm-item {
    background-color: var(--bg-input);
    padding: 15px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.perm-item:hover {
    background-color: #4a4a4a;
}

/* Build Section */
.build-status-area {
    padding: 32px;
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.build-workspace {
    display: grid;
    grid-template-columns: minmax(280px, 360px) minmax(320px, 1fr);
    gap: 24px;
    align-items: start;
}

.status-icon i {
    font-size: 4rem;
    color: var(--success-color);
    margin-bottom: 20px;
}

.btn-build, .btn-download {
    background-color: var(--success-color);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.2rem;
    cursor: pointer;
    text-transform: uppercase;
    font-weight: bold;
    border-radius: 4px;
    margin-top: 20px;
    transition: background 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-build:hover {
    background-color: #45a049;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 10px 16px;
    border-radius: 4px;
    cursor: pointer;
}

.btn-secondary:hover {
    border-color: var(--accent-color);
    color: var(--accent-hover);
}

.build-feedback,
.simulator-status {
    min-height: 22px;
    margin: 18px 0 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.build-feedback.is-error,
.simulator-status.is-error,
.device-warning.is-error {
    color: var(--danger-color);
}

.build-feedback.is-success,
.simulator-status.is-success {
    color: var(--success-color);
}

.build-feedback.is-warning,
.simulator-status.is-warning,
.device-warning.is-warning {
    color: var(--warning-color);
}

.simulator-panel {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
}

.simulator-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 12px;
}

.simulator-header h3 {
    margin: 0 0 4px;
    font-weight: 500;
}

.simulator-header p {
    margin: 0;
    color: var(--text-secondary);
}

.device-shell {
    width: min(100%, 420px);
    margin: 18px auto 0;
    border-radius: 34px;
    padding: 14px;
    background: linear-gradient(180deg, #3b3d46, #191a1f);
    box-shadow: 0 28px 60px rgba(0, 0, 0, 0.35);
    transition: width 0.2s ease;
}

.device-shell.landscape {
    width: min(100%, 620px);
}

.device-notch {
    width: 120px;
    height: 16px;
    border-radius: 999px;
    background-color: #111;
    margin: 0 auto 10px;
}

.device-screen {
    background-color: #11161d;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.device-toolbar {
    min-height: 52px;
    background: linear-gradient(90deg, #0f6ab8, #1086ca);
    display: flex;
    align-items: center;
    padding: 0 18px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.device-toolbar.is-hidden {
    display: none;
}

.device-stage {
    position: relative;
    background-color: #f5f5f5;
    aspect-ratio: 9 / 19.5;
    overflow: hidden;
}

.device-shell.landscape .device-stage {
    aspect-ratio: 19.5 / 9;
}

.device-placeholder,
.device-warning {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 28px;
    text-align: center;
    color: #555;
    background: linear-gradient(180deg, #f2f3f5, #dfe4ea);
    z-index: 2;
}

.device-placeholder i {
    font-size: 2rem;
}

.device-splash {
    position: absolute;
    inset: 0;
    background-color: #101820;
    z-index: 4;
    display: flex;
    align-items: center;
    justify-content: center;
}

.device-splash img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#preview-frame {
    width: 100%;
    height: 100%;
    border: 0;
    background-color: #fff;
    display: block;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background-color: #333;
    border-radius: 10px;
    margin-top: 15px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--accent-color);
    width: 0%;
    transition: width 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1100px) {
    .build-workspace {
        grid-template-columns: 1fr;
    }

    .device-shell,
    .device-shell.landscape {
        width: min(100%, 420px);
    }
}

@media (max-width: 720px) {
    body {
        overflow: auto;
        height: auto;
    }

    .app-container {
        min-height: 100vh;
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
    }

    .main-content {
        padding: 20px;
    }

    .row,
    .type-selector,
    .simulator-header {
        flex-direction: column;
    }

    .permissions-grid {
        grid-template-columns: 1fr;
    }
}