/**
 * TPPage Stylesheet
 * 
 * Windows 95 Theme & Web OS Layout Engine.
 * Provides pixel-perfect retro styling, responsive grid systems, window modals,
 * custom scrollbars, and taskbar integration.
 *
 * @project     TPPage Web OS
 * @version     1.1.0
 * @author      TPPage
 * @license     MIT
 */

@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&family=VT323&display=swap');

/* ==========================================================================
   1. GLOBAL VARIABLES & RESET
   ========================================================================== */

/**
 * Global CSS custom properties for Windows 95 color palette and typography.
 *
 * @section Variables
 */
:root {
    --win-bg: #C0C0C0;
    --win-border-light: #FFFFFF;
    --win-border-dark: #000000;
    --win-border-shadow: #808080;
    --win-border-light-shadow: #DFDFDF;
    --win-blue: #000080;
    --win-blue-light: #1084D7;
    
    --font-vt323: 'VT323', monospace;
    --font-retro: 'Press Start 2P', monospace;
}

/**
 * Universal box-sizing reset.
 */
*, *::before, *::after {
    box-sizing: border-box;
}

/**
 * Global typography rendering adjustments for retro crispness.
 */
body, * {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-smooth: never;
    text-rendering: optimizeLegibility;
}

/**
 * Pixelated rendering enforcement for retro graphical elements.
 */
img, canvas, svg, .menu-icon, .start-btn-icon, .tb-icon, .images {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    image-rendering: -moz-crisp-edges;
}

/**
 * Base HTML document setup.
 */
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

/**
 * Main application container with scanline background texture.
 *
 * @element body
 */
body {
    background-color: #018184;
    background-image: repeating-linear-gradient(
        0deg, 
        rgba(0, 0, 0, 0.15) 0px, 
        rgba(0, 0, 0, 0.15) 1px, 
        transparent 1px, 
        transparent 2px
    );
    font-family: var(--font-vt323);
    font-size: 18px;
    line-height: 1.2;
    margin: 0;
    padding: 0 0 55px 0;
    color: #000000;
    overflow-x: hidden;
}

/**
 * Fixed CRT overlay effect for visual authenticity.
 */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: repeating-linear-gradient(
        0deg, 
        rgba(0, 0, 0, 0.03) 0px, 
        rgba(0, 0, 0, 0.03) 1px, 
        transparent 1px, 
        transparent 2px
    );
    pointer-events: none;
    z-index: 9999;
}

/* ==========================================================================
   2. START MENU & SIDEBAR
   ========================================================================== */

/**
 * Windows 95 Start Menu container.
 *
 * @component StartMenu
 */
.start-menu {
    display: none;
    position: fixed;
    bottom: 44px;
    left: 2px;
    width: 250px;
    max-width: 90vw;
    background: var(--win-bg);
    border: 2px solid;
    border-color: var(--win-border-light) var(--win-border-dark) var(--win-border-dark) var(--win-border-light);
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.4);
    z-index: 8000;
    padding: 2px;
}

/**
 * Active state display trigger for Start Menu.
 */
.start-menu.active {
    display: flex !important;
}

/**
 * Start Menu vertical banner strip.
 */
.start-menu .sidebar-menu {
    width: 32px;
    background: linear-gradient(to top, var(--win-blue), var(--win-blue-light));
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 8px;
    flex-shrink: 0;
}

/**
 * Vertical banner typography inside Start Menu.
 */
.win-banner-text {
    color: var(--win-border-light);
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 20px;
    font-weight: bold;
    letter-spacing: 1px;
    user-select: none;
    font-family: var(--font-vt323);
}

/**
 * Content container for menu items inside Start Menu.
 */
.start-menu .content {
    flex: 1;
    padding: 2px;
    display: flex;
    flex-direction: column;
}

/**
 * Unified style for anchor links and buttons in Start Menu.
 */
.start-menu .content a,
.start-menu .content .menu-link-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px;
    text-decoration: none;
    color: var(--win-border-dark);
    font-size: 18px;
    font-family: var(--font-vt323);
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
}

.start-menu .content a:hover,
.start-menu .content .menu-link-btn:hover {
    background: var(--win-blue);
    color: var(--win-border-light);
}

/**
 * Icon elements used in menus and taskbar items.
 */
.menu-icon, .start-btn-icon, .tb-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
    flex-shrink: 0;
}

/**
 * Horizontal separators inside Start Menu.
 */
.start-menu hr {
    border: none;
    border-top: 1px solid var(--win-border-shadow);
    border-bottom: 1px solid var(--win-border-light);
    margin: 4px 1px;
}

/**
 * Sliding panel sidebar container.
 *
 * @component Sidebar
 */
.sidebar {
    font-family: var(--font-vt323);
    font-size: 18px;
    position: fixed;
    left: 10px;
    bottom: 55px;
    width: 280px;
    max-width: calc(100vw - 20px);
    height: 250px;
    background-color: var(--win-bg);
    border: 2px solid;
    border-color: var(--win-border-light) var(--win-border-dark) var(--win-border-dark) var(--win-border-light);
    z-index: 4500;
    transform: translateX(-350px);
    transition: transform 0.25s cubic-bezier(0.1, 0.9, 0.2, 1);
}

.sidebar.active {
    transform: translateX(0);
}

/* ==========================================================================
   3. TITLES & GRID LAYOUTS
   ========================================================================== */

/**
 * Primary retro ASCII heading style.
 *
 * @component ASCII Title
 */
.ascii-title {
    text-align: center;
    font-family: var(--font-retro);
    font-size: 64px;
    color: var(--win-border-light);
    text-shadow: 4px 4px 0px #333333, 7px 7px 0px #1a1a1a;
    padding: 25px 10px 15px;
    margin: 0 auto;
    width: 100%;
    word-break: break-word;
}

/**
 * Secondary section headers with dropped shadow.
 */
.section-title {
    text-align: center;
    font-family: var(--font-vt323);
    font-size: 36px;
    color: var(--win-border-light);
    letter-spacing: 2px;
    margin: 35px auto 15px;
    text-shadow: 2px 2px 0px var(--win-border-dark);
}

/**
 * Smooth scrolling scroll margins for main sections.
 */
#projects, #about, #contact, #comments {
    scroll-margin-top: 20px;
}

/**
 * Grid layout wrappers for desktop content distribution.
 *
 * @layout Grid
 */
.grid, .grid1 {
    display: grid;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto 30px;
    padding: 0 15px;
}

.grid { 
    grid-template-columns: 1fr 1fr; 
    gap: 20px; 
}

.grid1 { 
    grid-template-columns: 1fr; 
}

/* ==========================================================================
   4. WINDOWS & BUTTON COMPONENTS
   ========================================================================== */

/**
 * Standard desktop window component with 3D bevel borders.
 *
 * @component Window
 */
.window {
    background-color: var(--win-bg);
    border: 2px solid;
    border-color: var(--win-border-light) var(--win-border-dark) var(--win-border-dark) var(--win-border-light);
    box-shadow: 1px 1px 0px var(--win-border-dark);
    font-family: var(--font-vt323);
    display: flex;
    flex-direction: column;
}

/**
 * Draggable window titlebar header with gradient background.
 */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(to right, var(--win-blue) 0%, var(--win-blue-light) 100%);
    padding: 3px 6px;
    color: var(--win-border-light);
    font-size: 18px;
    font-weight: bold;
    user-select: none;
    cursor: move;
}

/**
 * Window control close button (X).
 */
.dot {
    width: 20px;
    height: 19px;
    cursor: pointer;
    background: var(--win-bg);
    border: 2px solid;
    border-color: var(--win-border-light) var(--win-border-dark) var(--win-border-dark) var(--win-border-light);
    font-size: 14px;
    font-weight: bold;
    color: var(--win-border-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    padding: 0;
    line-height: 1;
}

.dot::before { 
    content: '×'; 
}

.dot:active {
    border-color: var(--win-border-dark) var(--win-border-light) var(--win-border-light) var(--win-border-dark);
    padding: 1px 0 0 1px;
}

/**
 * Window content title bar with bottom border accent.
 */
.content_title {
    padding: 10px 15px 4px;
    font-size: 28px;
    font-family: var(--font-vt323);
    border-bottom: 2px groove var(--win-border-light-shadow);
}

/**
 * Generic text content area within windows.
 */
.content_text {
    padding: 12px 15px;
    font-size: 18px;
    color: var(--win-border-dark);
    word-break: break-word;
}

.about_me {
    padding: 12px 15px;
    font-family: var(--font-vt323);
    font-size: 20px;
    color: var(--win-border-dark);
}

/**
 * Classic Windows 95 bevel button styling.
 *
 * @component Button
 */
.button {
    display: inline-block;
    align-self: flex-start;
    margin: 10px 15px 15px;
    padding: 4px 14px;
    color: var(--win-border-dark);
    background: var(--win-bg);
    border: 2px solid;
    border-color: var(--win-border-light) var(--win-border-dark) var(--win-border-dark) var(--win-border-light);
    font-size: 18px;
    font-weight: bold;
    text-decoration: none;
    cursor: pointer;
    user-select: none;
    font-family: var(--font-vt323);
    text-align: center;
}

.button:active:not(:disabled) {
    border-color: var(--win-border-dark) var(--win-border-light) var(--win-border-light) var(--win-border-dark);
    padding: 5px 13px 3px 15px;
}

/**
 * Hyperlink text decoration styling.
 */
.link {
    text-decoration: underline;
    color: var(--win-blue);
    cursor: pointer;
    word-break: break-all;
}

.link:hover {
    color: #0000FF;
    background-color: var(--win-border-light);
}

.margin-top { 
    margin-top: 40px; 
}

/**
 * Animated dots extension for loading text indicators.
 */
.dots::after {
    content: '';
    animation: dots-animation 2s infinite;
}

@keyframes dots-animation {
    0%   { content: ' '; }
    33%  { content: '.'; }
    66%  { content: '..'; }
    100% { content: '...'; }
}

/* ==========================================================================
   5. OVERLAY & DESKTOP WINDOW DIALOGS
   ========================================================================== */

#overlay {
    display: none !important;
}

/**
 * Centered floating modal window instance.
 *
 * @component ModalWindow
 */
.modal-window, #help-panel {
    display: none;
    position: fixed !important;
    top: 50%; 
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 750px;
    max-height: 80vh;
    background-color: var(--win-bg);
    border: 2px solid;
    border-color: var(--win-border-light) var(--win-border-dark) var(--win-border-dark) var(--win-border-light);
    box-shadow: 3px 3px 10px rgba(0, 0, 0, 0.5);
    z-index: 4001;
    flex-direction: column;
}

/**
 * Transform reset during drag operations on floating windows.
 */
.modal-window.is-dragging, 
#help-panel.is-dragging,
.modal-window.dragged, 
#help-panel.dragged {
    transform: none !important;
}

/**
 * Inactive modal titlebar appearance.
 */
.modal-window .header {
    background: var(--win-border-shadow);
    color: var(--win-bg);
    cursor: move;
    user-select: none;
}

/**
 * Focused modal titlebar appearance.
 */
.modal-window.focused .header,
.sidebar.focused .header {
    background: linear-gradient(to right, var(--win-blue) 0%, var(--win-blue-light) 100%);
    color: var(--win-border-light);
}

.modal-window.active, #help-panel.active {
    display: flex !important;
}

/**
 * Scrollable inner body container for modal dialogs.
 */
.modal-body {
    padding: 15px;
    overflow-y: auto;
    font-size: 20px;
    word-break: break-word;
    flex: 1;
}

.modal-body h3 {
    margin-top: 0;
    font-size: 22px;
}

/**
 * Project thumbnail gallery layout.
 */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
    margin-top: 15px;
}

.images {
    width: 100%;
    height: 120px;
    border: 2px inset var(--win-bg);
    object-fit: cover;
}

/* ==========================================================================
   6. COMMENTS SECTION & CHAT LOG
   ========================================================================== */

/**
 * Input row controls for real-time chat module.
 *
 * @component ChatInput
 */
.comments-log,
.comments_log {
    border-top: 1px solid var(--win-border-shadow);
    display: flex;
    align-items: center;
    margin-top: 15px;
    padding: 8px;
    gap: 8px;
}

.comments-log .input,
.comments_log .input {
    background: var(--win-border-light);
    border: 2px inset var(--win-bg);
    color: var(--win-border-dark);
    font-family: var(--font-vt323);
    font-size: 18px;
    flex-grow: 1;
    padding: 4px 8px;
    outline: none;
    min-width: 0;
}

/**
 * Chat history messages container.
 */
#comments-list {
    max-height: 350px;
    overflow-y: auto;
    word-break: break-word;  
    padding-right: 5px;      
    margin-bottom: 10px;
}

.terminal-user {
    font-family: var(--font-vt323);
    font-size: 20px;
    white-space: nowrap;
}

.comments-item,
.comment-item {
    margin-bottom: 8px;
    font-size: 18px;
    line-height: 1.3;
}

.comments-date,
.comment-date { 
    color: #555555; 
}

.comments-author,
.comment-author { 
    color: var(--win-blue); 
    font-weight: bold; 
}

.comments-text,
.comment-text { 
    color: var(--win-border-dark); 
}

.comments-counter,
.counter {
    padding: 12px;
    font-size: 20px;
    border: 2px inset var(--win-bg);
}

/**
 * User role badges color coding.
 *
 * @section Badges
 */
.role-badge {
    font-weight: bold;
    font-size: 16px;
    margin-right: 4px;
}
.badge-owner { color: #FF00FF; }
.badge-admin { color: #FF3333; }
.badge-mod   { color: #00a844; }
.badge-vip   { color: #d97706; }
.badge-user  { color: #0040ff; }
.badge-guest { color: #888888; }

/* ==========================================================================
   7. DESKTOP TASKBAR
   ========================================================================== */

/**
 * Fixed desktop taskbar bar container.
 *
 * @component Taskbar
 */
#status-bar {
    display: flex;
    position: fixed;
    bottom: 0; 
    left: 0; 
    width: 100%; 
    height: 42px;
    background: var(--win-bg);
    border-top: 2px solid var(--win-border-light);
    z-index: 7000;
    align-items: center;
    padding: 2px 4px;
    gap: 4px;
    font-size: 18px;
}

/**
 * Start Button element on the bottom-left of taskbar.
 */
.taskbar-start {
    width: 95px;
    height: 34px;
    background: var(--win-bg);
    border: 2px solid;
    border-color: var(--win-border-light) var(--win-border-dark) var(--win-border-dark) var(--win-border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    font-weight: bold;
    font-size: 18px;
    font-family: var(--font-vt323);
    user-select: none;
    flex-shrink: 0;
}

.taskbar-start:active, .taskbar-start[aria-expanded="true"] {
    border-color: var(--win-border-dark) var(--win-border-light) var(--win-border-light) var(--win-border-dark);
    background-color: #B0B0B0;
}

/**
 * Open applications container inside taskbar.
 */
.taskbar-apps { 
    display: flex; 
    gap: 4px; 
    height: 100%; 
    flex: 1;
    overflow-x: auto;
    scrollbar-width: none;
    align-items: center;
}

.taskbar-apps::-webkit-scrollbar {
    display: none;
}

/**
 * Individual app tabs and user status badges inside taskbar.
 */
.taskbar-item, .taskbar-fixed {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 2px 8px;
    height: 34px;
    font-size: 18px;
    white-space: nowrap;
    user-select: none;
    flex-shrink: 0;
    width: auto;
    max-width: none;
}

.taskbar-item {
    border: 2px solid;
    border-color: var(--win-border-light) var(--win-border-dark) var(--win-border-dark) var(--win-border-light);
    cursor: pointer;
    background: var(--win-bg);
}

/**
 * Prevents line breaks for dynamic user dynamic strings (e.g. User: TPPage [ADMIN]).
 */
.taskbar-item span, 
.taskbar-fixed span,
#display-user-id {
    white-space: nowrap !important;
    word-break: normal !important;
    display: inline-block;
}

/**
 * Active/Pressed window tab state inside taskbar.
 */
.taskbar-item.active {
    border-color: var(--win-border-dark) var(--win-border-light) var(--win-border-light) var(--win-border-dark);
    background-color: #E0E0E0;
    background-image: repeating-linear-gradient(45deg, #CCC 0, #CCC 1px, transparent 0, transparent 50%);
    background-size: 2px 2px;
}

.taskbar-item strong, .taskbar-fixed strong { 
    color: var(--win-blue); 
}

.pad-left { 
    padding-left: 2px; 
}

/**
 * Tray area system clock display on taskbar.
 */
#clock {
    margin-left: auto;
    padding: 2px 10px;
    height: 34px;
    border: 2px inset var(--win-bg);
    display: flex;
    align-items: center;
    font-size: 18px;
    user-select: none;
    flex-shrink: 0;
    background: var(--win-bg);
}

/* ==========================================================================
   8. TOAST NOTIFICATIONS & BOOT ANIMATIONS
   ========================================================================== */

/**
 * System notification popup (Toast).
 *
 * @component Toast
 */
.retro-toast,
.toast {
    position: fixed;
    bottom: 52px; 
    right: 15px;
    background: var(--win-bg);
    border: 2px solid;
    border-color: var(--win-border-light) var(--win-border-dark) var(--win-border-dark) var(--win-border-light);
    padding: 8px 12px;
    font-size: 18px;
    z-index: 9000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.4);
}

.retro-toast.show,
.toast.show { 
    opacity: 1; 
    pointer-events: auto;
}

/**
 * Fullscreen OS Boot/Loading screen overlay.
 *
 * @component BootScreen
 */
#loading-screen {
    position: fixed;
    inset: 0;
    background: #018184;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.4s ease;
}

#loading-window { 
    width: 360px; 
    max-width: 90vw;
    background: var(--win-bg); 
    border: 2px solid; 
    border-color: var(--win-border-light) var(--win-border-dark) var(--win-border-dark) var(--win-border-light);
}

.loading-content {
    padding: 15px;
    font-family: var(--font-vt323);
    font-size: 20px;
}

.loading-content p { 
    margin: 0 0 4px 0; 
    opacity: 0; 
}

.loading-bar {
    width: 100%; 
    height: 20px;
    border: 2px inset var(--win-bg);
    margin: 10px 0;
    display: none;
    background: var(--win-border-light);
}

.loading-progress {
    height: 100%;
    background: linear-gradient(to right, var(--win-blue), var(--win-blue-light));
    width: 0%;
    transition: width 0.3s ease;
}

#loading-percent { 
    text-align: center; 
    font-weight: bold; 
    display: none; 
}

/* ==========================================================================
   9. USER AUTHENTICATION MODAL STYLES
   ========================================================================== */

/**
 * User login and registration form inputs container.
 *
 * @component AuthForm
 */
.auth-form-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 10px;
    margin-bottom: 12px;
    font-family: var(--font-vt323);
}

/**
 * Inset retro input field.
 */
.retro-input {
    font-family: var(--font-vt323) !important;
    background: var(--win-border-light);
    border: 2px inset var(--win-bg);
    padding: 4px 8px;
    font-size: 18px;
    outline: none;
}

.save-btn {
    margin: 4px 0 0 0 !important;
}

.auth-note {
    font-size: 13px !important;
    opacity: 0.8;
}

/* ==========================================================================
   10. MEDIA QUERIES & RESPONSIVENESS
   ========================================================================== */

/**
 * Desktop large screen viewport optimizations (1200px and up).
 */
@media (min-width: 1200px) {
    body { font-size: 20px; }
    .ascii-title { font-size: 80px; }
    .section-title { font-size: 42px; }
    .content_title { font-size: 32px; }
    .content_text, .modal-body, .about_me { font-size: 22px; }
    .button { font-size: 20px; }
}

/**
 * Tablet viewport adjustments (Up to 900px).
 */
@media (max-width: 900px) {
    .ascii-title { font-size: 48px; }
    .section-title { font-size: 30px; }
}

/**
 * Small screen viewport fallback rules (Below 615px).
 */
@media (max-width: 615px) {
    /* Hides user role badge ([ADMIN], [USER], etc.) inside the taskbar badge */
    #display-user-id .role-badge {
        display: none !important;
    }

    body { padding-bottom: 50px; }
    
    .grid { 
        grid-template-columns: 1fr;
    }

    .ascii-title { font-size: 32px; text-shadow: 2px 2px 0px #333; }
    .section-title { font-size: 26px; margin: 25px auto 10px; }

    /* Centers mobile windows and help panel ONLY when active */
    .modal-window.active, 
    #help-panel.active {
        position: fixed !important;
        top: 50% !important;
        left: 50% !important;
        transform: translate(-50%, -50%) !important;
        width: 94% !important;
        max-width: none !important;
        max-height: 85vh !important;
        margin: 0 !important;
    }

    /* Keeps sidebar position aligned on mobile when active */
    .sidebar.active {
        position: fixed !important;
        top: 50% !important;
        left: 50% !important;
        transform: translate(-50%, -50%) !important;
        width: 94% !important;
        max-height: 85vh !important;
    }

    .header {
        cursor: default !important;
    }

    .modal-body { font-size: 18px; padding: 10px; }
    
    .comments-log, .comments_log {
        flex-direction: column;
        align-items: stretch;
    }

    .terminal-user { display: none; }

    .button {
        width: calc(100% - 30px);
        text-align: center;
        margin: 8px 15px;
    }

    #status-bar {
        height: 42px;
        padding: 2px;
    }

    .taskbar-start {
        width: 75px;
        font-size: 16px;
        padding: 0 4px;
    }

    .taskbar-fixed { display: none; }

    .taskbar-item {
        font-size: 15px;
        padding: 2px 6px;
    }

    #clock {
        display: none;
    }

    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    }
}

@media (max-width: 363px) {
    /* 1. Riduzione del pulsante Start per risparmiare spazio */
    .taskbar-start {
        width: 60px !important;
        font-size: 14px !important;
        padding: 0 2px !important;
    }
    
    .start-btn-icon {
        width: 18px !important;
        height: 18px !important;
    }

    /* 2. Ottimizzazione delle schede applicazione sulla Taskbar */
    .taskbar-item, .taskbar-fixed {
        font-size: 13px !important;
        padding: 2px 4px !important;
        gap: 3px !important;
    }

    .tb-icon {
        width: 18px !important;
        height: 18px !important;
    }

    /* 3. Riduzione dei margini delle finestre modali per non sbordare */
    .modal-window.active, 
    #help-panel.active,
    .sidebar.active {
        width: 98% !important;
        max-height: 90vh !important;
    }

    .modal-body {
        padding: 6px !important;
        font-size: 16px !important;
    }

    /* 4. Adattamento dell'intestazione (ASCII Title e Modali) */
    .ascii-title {
        font-size: 24px !important;
        padding: 15px 5px 10px !important;
    }

    .section-title {
        font-size: 22px !important;
    }

    .content_title {
        font-size: 22px !important;
        padding: 8px 10px 4px !important;
    }

    /* 5. Prevenzione dello scorrimento orizzontale forzato */
    body {
        overflow-x: hidden !important;
    }
}