/* ============================================================
   Root Access — Terminal Visual Layer
   ============================================================ */

/* ---- Reset & Base ---- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --green: #33ff33;
    --green-dim: #1a9e1a;
    --bg: #0a0a0a;
    --bg-light: #111;
    --red: #ff3333;
    --dark-red: #8b0000;
    --yellow: #ffff33;
    --cyan: #33ffff;
    --white: #f0f0f0;
    --gray: #777;
    --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', 'Liberation Mono', monospace;
    --font-size: 14px;
    --line-height: 1.4;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--bg);
    color: var(--green);
    font-family: var(--font-mono);
    font-size: var(--font-size);
    line-height: var(--line-height);
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
}

/* ---- Selection ---- */
::selection {
    background: rgba(51, 255, 51, 0.3);
    color: var(--white);
}
::-moz-selection {
    background: rgba(51, 255, 51, 0.3);
    color: var(--white);
}

/* ============================================================
   Terminal Layout — flexbox column, full viewport
   ============================================================ */
#terminal {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100vh;
    height: 100dvh; /* dynamic viewport for mobile */
    position: relative;
    overflow: hidden;
    background: var(--bg);
    transition: background-color 0.3s ease, filter 0.3s ease;
}

/* ---- Scrollable output area ---- */
#output {
    flex: 1 1 auto;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px 14px 4px;
    white-space: pre-wrap;
    word-wrap: break-word;
    overscroll-behavior: contain;
}

/* Desktop: thin custom scrollbar */
@media (pointer: fine) {
    #output::-webkit-scrollbar {
        width: 6px;
    }
    #output::-webkit-scrollbar-track {
        background: transparent;
    }
    #output::-webkit-scrollbar-thumb {
        background: var(--green-dim);
        border-radius: 3px;
    }
    #output::-webkit-scrollbar-thumb:hover {
        background: var(--green);
    }
    /* Firefox */
    #output {
        scrollbar-width: thin;
        scrollbar-color: var(--green-dim) transparent;
    }
}

/* Mobile: hide scrollbar */
@media (pointer: coarse) {
    #output::-webkit-scrollbar {
        display: none;
    }
    #output {
        scrollbar-width: none;
    }
}

/* ---- Output lines ---- */
.output-line {
    min-height: 1em;
    padding: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* ---- Input line (fixed at bottom) ---- */
#input-line {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    padding: 6px 14px 12px;
    background: var(--bg);
    border-top: 1px solid #1a1a1a;
    white-space: nowrap;
    min-height: 36px;
    position: relative;
}

#prompt {
    color: var(--green);
    flex-shrink: 0;
    user-select: none;
    transition: color 0.4s ease;
}

#command-input {
    flex: 1 1 auto;
    background: transparent;
    border: none;
    outline: none;
    color: var(--green);
    font-family: var(--font-mono);
    font-size: inherit;
    line-height: inherit;
    caret-color: transparent; /* we use our own cursor */
    padding: 0;
    margin: 0;
    width: 100%;
    min-width: 0;
}

#command-input:disabled {
    opacity: 0.5;
}

/* ---- Blinking block cursor ---- */
#cursor {
    color: var(--green);
    font-weight: normal;
    user-select: none;
    opacity: 0;
    transition: color 0.4s ease;
    pointer-events: none;
}

/* Hidden span used to measure text width for cursor positioning */
#input-measure {
    position: absolute;
    visibility: hidden;
    white-space: pre;
    font-family: var(--font-mono);
    font-size: inherit;
    line-height: inherit;
    pointer-events: none;
}

#cursor.blink {
    animation: cursor-blink 1s step-end infinite;
}

@keyframes cursor-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ---- Echo lines ---- */
.input-echo {
    color: var(--green);
}
.echo-prompt {
    color: var(--green);
    user-select: none;
}
.echo-command {
    color: var(--green);
}

/* ============================================================
   Text color classes
   ============================================================ */
.color-green  { color: var(--green); }
.color-white  { color: var(--white); }
.color-red    { color: var(--red); }
.color-yellow { color: var(--yellow); }
.color-cyan   { color: var(--cyan); }
.color-gray   { color: var(--gray); }
.color-magenta { color: #ff33ff; }

/* ---- Semantic text classes ---- */
.error    { color: var(--red); }
.warning  { color: var(--yellow); }
.system   { color: var(--cyan); }
.dim      { color: var(--gray); }
.highlight { color: var(--white); font-weight: bold; }
.italic   { font-style: italic; }
.blink    { animation: cursor-blink 1s step-end infinite; }
.creepy   {
    color: var(--dark-red);
    text-shadow: 0 0 4px rgba(139, 0, 0, 0.6);
    animation: creepy-jitter 4s ease-in-out infinite;
}

@keyframes creepy-jitter {
    0%, 100% { transform: none; }
    47%      { transform: none; }
    48%      { transform: translateX(-1px) skewX(0.5deg); }
    49%      { transform: translateX(1px) skewX(-0.3deg); }
    50%      { transform: none; }
}

/* ============================================================
   Mobile — "tap to type" overlay
   ============================================================ */
#mobile-keyboard-toggle {
    display: none; /* shown via JS on mobile */
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 18px;
    text-align: center;
    background: rgba(51, 255, 51, 0.08);
    border-top: 1px solid var(--green-dim);
    color: var(--green);
    font-family: var(--font-mono);
    font-size: 16px;
    cursor: pointer;
    z-index: 100;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

#mobile-keyboard-toggle:active {
    background: rgba(51, 255, 51, 0.18);
}

.mobile-only {
    /* placeholder class for markup; visibility controlled by JS */
}

/* ============================================================
   Mobile responsive
   ============================================================ */
@media (max-width: 768px) {
    :root {
        --font-size: 16px; /* prevents iOS auto-zoom on focus */
    }

    #output {
        padding: 10px 10px 4px;
    }

    #input-line {
        padding: 6px 10px 10px;
    }
}

/* ============================================================
   GLITCH / HORROR EFFECTS
   ============================================================ */

/* ---- .glitch — text jitter / displacement ---- */
.glitch {
    animation: glitch-anim 0.3s linear infinite;
}

@keyframes glitch-anim {
    0%   { transform: translate(0); }
    10%  { transform: translate(-2px, 1px); }
    20%  { transform: translate(2px, -1px); }
    30%  { transform: translate(-1px, 2px); }
    40%  { transform: translate(1px, -2px); }
    50%  { transform: translate(-2px, 0); }
    60%  { transform: translate(2px, 1px); }
    70%  { transform: translate(0, -1px); }
    80%  { transform: translate(-1px, 0); }
    90%  { transform: translate(1px, 1px); }
    100% { transform: translate(0); }
}

/* ---- .flicker — screen flicker ---- */
.flicker {
    animation: flicker-anim 0.15s linear infinite;
}

@keyframes flicker-anim {
    0%   { opacity: 1; }
    25%  { opacity: 0.6; }
    30%  { opacity: 1; }
    50%  { opacity: 0.8; }
    55%  { opacity: 1; }
    70%  { opacity: 0.4; }
    75%  { opacity: 1; }
    100% { opacity: 0.9; }
}

/* ---- .corrupt — scrambled text appearance ---- */
.corrupt {
    animation: corrupt-anim 0.5s linear infinite;
    letter-spacing: 2px;
}

@keyframes corrupt-anim {
    0%   { transform: skewX(0deg); letter-spacing: 0; }
    20%  { transform: skewX(2deg); letter-spacing: 3px; }
    40%  { transform: skewX(-1deg); letter-spacing: 1px; }
    60%  { transform: skewX(3deg); letter-spacing: 4px; }
    80%  { transform: skewX(-2deg); letter-spacing: 0; }
    100% { transform: skewX(0deg); letter-spacing: 0; }
}

/* ---- .shake — screen shake ---- */
.shake {
    animation: shake-anim 0.1s linear infinite;
}

@keyframes shake-anim {
    0%   { transform: translate(0); }
    25%  { transform: translate(4px, -3px); }
    50%  { transform: translate(-3px, 2px); }
    75%  { transform: translate(3px, 4px); }
    100% { transform: translate(-2px, -2px); }
}

/* ---- .redshift — everything shifts to red tones ---- */
.redshift {
    filter: hue-rotate(-80deg) saturate(2) brightness(0.9);
    transition: filter 0.3s ease;
}

/* ---- .scanlines — CRT scanline overlay ---- */
.scanlines::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 9999;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 2px,
        rgba(0, 0, 0, 0.15) 2px,
        rgba(0, 0, 0, 0.15) 4px
    );
    mix-blend-mode: multiply;
}

/* ---- .static — TV static noise ---- */
.static::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    pointer-events: none;
    z-index: 9998;
    opacity: 0.08;
    animation: static-anim 0.2s steps(8) infinite;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='4' height='4'%3E%3Crect width='1' height='1' fill='white' x='0' y='0'/%3E%3Crect width='1' height='1' fill='white' x='2' y='2'/%3E%3C/svg%3E");
    background-size: 4px 4px;
}

@keyframes static-anim {
    0%   { transform: translate(0, 0); }
    12%  { transform: translate(-5%, -10%); }
    25%  { transform: translate(10%, 5%); }
    37%  { transform: translate(-3%, 8%); }
    50%  { transform: translate(7%, -5%); }
    62%  { transform: translate(-8%, 3%); }
    75%  { transform: translate(4%, -7%); }
    87%  { transform: translate(-6%, 10%); }
    100% { transform: translate(2%, -3%); }
}

/* ---- Screen flash overlay ---- */
#flash-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.05s ease;
}

/* ---- Crash black screen ---- */
#crash-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #000;
    z-index: 10001;
    display: none;
}

/* ---- Ghost typing indicator ---- */
#command-input.ghost-typing {
    color: var(--red);
    animation: ghost-pulse 0.5s ease-in-out infinite alternate;
}

@keyframes ghost-pulse {
    from { opacity: 0.6; }
    to   { opacity: 1; }
}

/* ---- Glitch reveal character ---- */
.glitch-char {
    display: inline;
    animation: glitch-char-anim 0.1s steps(1) 1;
}

@keyframes glitch-char-anim {
    0%   { opacity: 0; transform: translateY(-2px); }
    50%  { opacity: 1; color: var(--white); transform: translateY(1px); }
    100% { opacity: 1; color: inherit; transform: translateY(0); }
}