/* =========================================================
   Campo Minado (Minesweeper) - Windows 95 Classic Style
   ========================================================= */

:root {
    --win95-bg: #008080;            /* Classic Windows 95 Teal desktop */
    --win95-gray: #c0c0c0;          /* Standard Win95 light gray */
    --win95-light: #ffffff;         /* Highlight border */
    --win95-dark: #808080;          /* Shadow border */
    --win95-black: #000000;         /* Darkest border / text */
    --win95-blue: #000080;          /* Active window title bar */
    --win95-blue-light: #1084d0;
    --win95-inactive-bar: #808080;
    --cell-size: 28px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
    font-family: 'Segoe UI', Tahoma, 'MS Sans Serif', Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--win95-bg);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 16px;
    background-image: radial-gradient(rgba(255,255,255,0.08) 1px, transparent 1px);
    background-size: 16px 16px;
    overflow-x: hidden;
}

#app-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 100%;
}

/* =========================================================
   Windows 95 Window Frame Component
   ========================================================= */
.win95-window {
    background-color: var(--win95-gray);
    border: 3px solid;
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
    box-shadow: 2px 2px 0px var(--win95-black);
    padding: 3px;
    display: flex;
    flex-direction: column;
    max-width: 98vw;
}

.window-titlebar {
    background: linear-gradient(90deg, var(--win95-blue) 0%, var(--win95-blue-light) 100%);
    color: #ffffff;
    height: 26px;
    padding: 0 4px 0 6px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: bold;
    font-size: 13px;
    letter-spacing: 0.5px;
}

.window-title-left {
    display: flex;
    align-items: center;
    gap: 6px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.window-icon {
    width: 16px;
    height: 16px;
    image-rendering: pixelated;
    border-radius: 2px;
}

.window-controls {
    display: flex;
    gap: 2px;
}

.win-btn {
    width: 18px;
    height: 16px;
    background-color: var(--win95-gray);
    border: 2px solid;
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
    font-size: 10px;
    font-weight: bold;
    color: var(--win95-black);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    line-height: 1;
    padding-bottom: 2px;
}

.win-btn:active {
    border-color: var(--win95-dark) var(--win95-light) var(--win95-light) var(--win95-dark);
    padding-top: 2px;
    padding-bottom: 0px;
}

/* =========================================================
   Menu Bar
   ========================================================= */
.window-menubar {
    display: flex;
    background-color: var(--win95-gray);
    border-bottom: 2px solid var(--win95-dark);
    padding: 2px 2px;
    position: relative;
}

.menu-item {
    position: relative;
}

.menu-button {
    background: transparent;
    border: 1px solid transparent;
    padding: 2px 8px;
    font-size: 12px;
    cursor: pointer;
    color: var(--win95-black);
}

.menu-button:hover, .menu-button.active {
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
    background-color: var(--win95-gray);
}

.menu-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--win95-gray);
    border: 2px solid;
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
    box-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    min-width: 170px;
    z-index: 100;
    padding: 2px 0;
}

.menu-dropdown.show {
    display: block;
}

.dropdown-item {
    padding: 4px 16px 4px 12px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--win95-black);
}

.dropdown-item:hover {
    background-color: var(--win95-blue);
    color: #ffffff;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--win95-dark);
    border-bottom: 1px solid var(--win95-light);
    margin: 3px 0;
}

/* =========================================================
   Start Screen Window
   ========================================================= */
#start-screen-window {
    width: 580px;
    max-width: 95vw;
}

.start-banner-container {
    width: 100%;
    margin-bottom: 10px;
    border: 2px solid;
    border-color: var(--win95-dark) var(--win95-light) var(--win95-light) var(--win95-dark);
    background: #000;
    overflow: hidden;
}

.start-banner-img {
    width: 100%;
    height: auto;
    display: block;
    image-rendering: auto;
}

.start-body {
    padding: 10px;
}

.section-title {
    font-size: 13px;
    font-weight: bold;
    color: var(--win95-black);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.difficulty-selection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 8px;
    margin-bottom: 14px;
}

.difficulty-card {
    background-color: var(--win95-gray);
    border: 2px solid;
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
    padding: 10px 8px;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.1s;
}

.difficulty-card:hover {
    background-color: #d8d8d8;
}

.difficulty-card.selected {
    border-color: var(--win95-dark) var(--win95-light) var(--win95-light) var(--win95-dark);
    background-color: #b0b0b0;
    box-shadow: inset 1px 1px 2px rgba(0,0,0,0.3);
}

.diff-icon {
    font-size: 24px;
    margin-bottom: 4px;
}

.diff-name {
    font-weight: bold;
    font-size: 13px;
    color: #000;
}

.diff-desc {
    font-size: 11px;
    color: #404040;
    margin-top: 2px;
}

.diff-mines {
    font-size: 11px;
    color: #900;
    font-weight: bold;
    margin-top: 3px;
}

.start-records-box {
    border: 2px solid;
    border-color: var(--win95-dark) var(--win95-light) var(--win95-light) var(--win95-dark);
    background-color: #ffffff;
    padding: 8px 12px;
    margin-bottom: 12px;
    font-size: 12px;
}

.record-row {
    display: flex;
    justify-content: space-between;
    padding: 2px 0;
}

.record-label {
    font-weight: bold;
    color: var(--win95-blue);
}

.start-action-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 8px;
}

/* Classic Win95 Push Button */
.win95-btn {
    background-color: var(--win95-gray);
    border: 2px solid;
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
    box-shadow: 1px 1px 0px var(--win95-black);
    padding: 6px 14px;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    min-width: 80px;
}

.win95-btn.btn-primary {
    outline: 1px solid var(--win95-black);
    outline-offset: -3px;
}

.win95-btn:active {
    border-color: var(--win95-dark) var(--win95-light) var(--win95-light) var(--win95-dark);
    box-shadow: none;
    transform: translate(1px, 1px);
}

/* =========================================================
   Game Window & Controls Header
   ========================================================= */
#game-window {
    display: flex;
    flex-direction: column;
}

.game-content-wrapper {
    padding: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.game-header-panel {
    width: 100%;
    background-color: var(--win95-gray);
    border: 3px solid;
    border-color: var(--win95-dark) var(--win95-light) var(--win95-light) var(--win95-dark);
    padding: 4px 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

/* 7-Segment LED Displays */
.led-display {
    display: flex;
    background-color: #000000;
    border: 1px solid #808080;
    padding: 2px 3px;
    border-radius: 1px;
}

.digit {
    position: relative;
    width: 14px;
    height: 24px;
    margin: 0 1.5px;
}

.seg {
    position: absolute;
    background-color: #3b0000; /* Dark unlit segment */
    border-radius: 1px;
    transition: background-color 0.05s;
}

.seg.active {
    background-color: #ff0000; /* Bright lit red */
    box-shadow: 0 0 3px rgba(255, 0, 0, 0.8);
}

/* Segment positioning */
.seg-a { top: 0px; left: 2px; width: 10px; height: 3px; }
.seg-b { top: 2px; right: 0px; width: 3px; height: 9px; }
.seg-c { top: 12px; right: 0px; width: 3px; height: 9px; }
.seg-d { bottom: 0px; left: 2px; width: 10px; height: 3px; }
.seg-e { top: 12px; left: 0px; width: 3px; height: 9px; }
.seg-f { top: 2px; left: 0px; width: 3px; height: 9px; }
.seg-g { top: 10px; left: 2px; width: 10px; height: 3px; }

/* Smiley Reset Button */
.face-button {
    width: 38px;
    height: 38px;
    background-color: var(--win95-gray);
    border: 3px solid;
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 2px;
}

.face-button:active {
    border-color: var(--win95-dark) var(--win95-light) var(--win95-light) var(--win95-dark);
    padding: 3px 1px 1px 3px;
}

.face-svg {
    width: 26px;
    height: 26px;
    display: block;
}

/* =========================================================
   Board & Cells
   ========================================================= */
.board-viewport {
    max-width: 95vw;
    max-height: 70vh;
    overflow: auto;
    border: 3px solid;
    border-color: var(--win95-dark) var(--win95-light) var(--win95-light) var(--win95-dark);
    background-color: #808080;
    padding: 2px;
    touch-action: pan-x pan-y;
}

#game-board {
    display: grid;
    gap: 0px;
    background-color: #808080;
    transition: transform 0.15s ease-out;
}

.cell {
    width: var(--cell-size);
    height: var(--cell-size);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    font-weight: 900;
    cursor: pointer;
    position: relative;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.cell-unrevealed {
    background-color: var(--win95-gray);
    border: 3px solid;
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
}

.cell-unrevealed:active {
    border: 1px solid var(--win95-dark);
    background-color: #bdbdbd;
}

.cell-revealed {
    background-color: #c0c0c0;
    border: 1px solid #7b7b7b;
    border-top-color: #7b7b7b;
    border-left-color: #7b7b7b;
}

.cell-exploded {
    background-color: #ff0000 !important;
}

.cell-wrong-flag {
    background-color: #c0c0c0;
}

/* Sprites inside cells */
.sprite {
    width: 20px;
    height: 20px;
    display: block;
}

.sprite-mine {
    animation: minePop 0.15s ease-out;
}

.sprite-question {
    font-weight: bold;
    color: #000080;
    font-size: 18px;
}

.crossed-mine-wrapper {
    position: relative;
    width: 20px;
    height: 20px;
}

.sprite-cross {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Number Colors */
.num-1 { color: #0000ff; }
.num-2 { color: #008000; }
.num-3 { color: #ff0000; }
.num-4 { color: #000080; }
.num-5 { color: #800000; }
.num-6 { color: #008080; }
.num-7 { color: #000000; }
.num-8 { color: #808080; }

/* =========================================================
   Mobile Controls Bar & Zoom Toolbar
   ========================================================= */
.mobile-controls-toolbar {
    margin-top: 8px;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 6px;
    background-color: var(--win95-gray);
    border: 2px solid;
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
    padding: 4px 6px;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

.mode-toggle-btn {
    height: 28px;
    padding: 0 10px;
    font-size: 12px;
    font-weight: bold;
    white-space: nowrap;
    cursor: pointer;
    background-color: var(--win95-gray);
    border: 2px solid;
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    user-select: none;
}

.mode-toggle-btn.mode-flag-active {
    background-color: #ffe6e6;
    border-color: var(--win95-dark) var(--win95-light) var(--win95-light) var(--win95-dark);
    color: #b00;
}

.tool-icon-btn {
    min-width: 34px;
    height: 28px;
    padding: 0 5px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    white-space: nowrap;
    cursor: pointer;
    background-color: var(--win95-gray);
    border: 2px solid;
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
    line-height: 1;
    user-select: none;
}

.tool-icon-btn:active {
    border-color: var(--win95-dark) var(--win95-light) var(--win95-light) var(--win95-dark);
    transform: translate(1px, 1px);
}

/* =========================================================
   Modal Dialogs
   ========================================================= */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal-dialog {
    background-color: var(--win95-gray);
    border: 3px solid;
    border-color: var(--win95-light) var(--win95-dark) var(--win95-dark) var(--win95-light);
    box-shadow: 3px 3px 6px rgba(0,0,0,0.5);
    padding: 3px;
    max-width: 420px;
    width: 90vw;
}

.modal-body {
    padding: 12px;
    font-size: 12px;
}

.form-group {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.form-group label {
    font-weight: bold;
}

.form-input {
    border: 2px solid;
    border-color: var(--win95-dark) var(--win95-light) var(--win95-light) var(--win95-dark);
    padding: 3px 6px;
    font-size: 12px;
    background-color: #fff;
    width: 80px;
    text-align: center;
}

.form-input.full-width {
    width: 100%;
    text-align: left;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 12px;
}

/* Shake Animation on Explosion */
@keyframes shake {
    0% { transform: translate(1px, 1px) rotate(0deg); }
    15% { transform: translate(-3px, -2px) rotate(-1deg); }
    30% { transform: translate(3px, 2px) rotate(1deg); }
    45% { transform: translate(-3px, 1px) rotate(0deg); }
    60% { transform: translate(3px, -1px) rotate(1deg); }
    75% { transform: translate(-1px, 2px) rotate(-1deg); }
    100% { transform: translate(1px, -2px) rotate(0deg); }
}

.shake-animation {
    animation: shake 0.45s cubic-bezier(.36,.07,.19,.97) both;
}

/* Utility */
.hidden {
    display: none !important;
}

/* Responsive adjustments */
@media (max-width: 480px) {
    :root {
        --cell-size: 25px;
    }
    .start-action-buttons {
        flex-direction: column;
    }
    .win95-btn {
        width: 100%;
    }
}