:root {
    --bg-dark: #050a0f;
    --bg-panel: rgba(10, 20, 30, 0.85);
    --border-color: rgba(0, 240, 255, 0.3);
    --border-glow: rgba(0, 240, 255, 0.6);
    --color-cyan: #00f0ff;
    --color-amber: #ff8c00;
    --color-red: #ff3333;
    --color-green: #39ff14;
    --text-color: #c4d7e6;
    --text-dim: #7f99b1;
    --font-header: 'Orbitron', sans-serif;
    --font-mono: 'Share Tech Mono', monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-drag: none;
}

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-dark);
    font-family: var(--font-mono);
    color: var(--text-color);
    /* DÜZELTME (mobil): sayfa kaymasını/bounce'unu ve dokunmatik gecikmeyi engelle */
    touch-action: none;
    overscroll-behavior: none;
    position: fixed;
    top: 0;
    left: 0;
}

/* Canvas ve oyun katmanı dokunmatik kaymayı tamamen kapatsın */
#gameCanvas, #game-container {
    touch-action: none;
}

/* DÜZELTME (mobil): kaydırılabilir UI panelleri (görev listesi, hangar, kontroller)
   dikey dokunmatik kaydırmaya izin versin — yoksa parmakla scroll edilemez */
.mission-grid,
.upgrades-list,
.controls-layout,
.ui-screen {
    touch-action: pan-y;
    -webkit-overflow-scrolling: touch;
}

/* CRT Screen Effect Overlay */
.crt::after {
    content: " ";
    display: block;
    position: absolute;
    top: 0; left: 0; bottom: 0; right: 0;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
    aspect-ratio: auto;
    background-size: 100% 4px, 6px 100%;
    z-index: 99999;
    pointer-events: none;
    opacity: 0.7;
}

#app-container {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    background: radial-gradient(circle, #0e1e2d 0%, #03060a 100%);
    overflow: hidden; /* DÜZELTME (mobil): anasayfadaki ufak kaymayı engelle */
}

.vignette-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    box-shadow: inset 0 0 100px rgba(0,0,0,0.8);
    pointer-events: none;
    z-index: 1000;
}

.hud-grid-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: 
        linear-gradient(rgba(0, 240, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center;
    pointer-events: none;
    z-index: 1;
}

/* SCREENS ROUTING SYSTEM */
.ui-screen {
    position: absolute;
    width: 90%;
    max-width: 1100px;
    height: 85%;
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.1), inset 0 0 20px rgba(0, 240, 255, 0.05);
    border-radius: 4px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: scale(0.97) translateY(10px);
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1);
    z-index: 10;
    backdrop-filter: blur(10px);
}

.ui-screen.active {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: all;
    z-index: 15;
}

/* HEADER PANELS */
.cyber-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 25px;
    font-family: var(--font-header);
    font-size: 12px;
    letter-spacing: 2px;
}

.cyber-header .brand {
    color: var(--color-cyan);
    font-weight: 700;
    text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
}

.cyber-header .classification {
    color: var(--text-dim);
}

/* TITLE STYLING */
.title-container {
    text-align: center;
    margin-top: 30px;
    margin-bottom: 50px;
}

h1.glitch {
    font-family: var(--font-header);
    font-size: 84px;
    font-weight: 900;
    color: #fff;
    letter-spacing: 12px;
    position: relative;
    text-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
    margin-bottom: 10px;
}

/* Subtitle under title */
.subtitle {
    font-family: var(--font-header);
    color: var(--color-amber);
    font-size: 16px;
    letter-spacing: 6px;
    text-shadow: 0 0 5px rgba(255, 140, 0, 0.3);
}

/* MENU LAYOUT */
.menu-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    flex-grow: 1;
    align-items: center;
}

.menu-options {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* CYBER BUTTONS */
.btn-cyber {
    position: relative;
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid var(--color-cyan);
    color: #fff;
    font-family: var(--font-header);
    font-size: 18px;
    font-weight: 700;
    padding: 18px 24px;
    text-align: left;
    cursor: pointer;
    overflow: hidden;
    transition: all 0.3s ease;
    clip-path: polygon(0 0, 95% 0, 100% 30%, 100% 100%, 5% 100%, 0 70%);
}

.btn-cyber::before {
    content: '';
    position: absolute;
    top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.2), transparent);
    transition: all 0.4s ease;
}

.btn-cyber:hover::before {
    left: 100%;
}

.btn-cyber:hover {
    background: rgba(0, 240, 255, 0.15);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
    text-shadow: 0 0 5px #fff;
}

.btn-text {
    letter-spacing: 3px;
}

.btn-indicator {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background-color: var(--color-cyan);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--color-cyan);
    animation: pulse 1.5s infinite alternate;
}

/* SMALL CYBER BUTTON */
.btn-cyber-sm {
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--color-cyan);
    font-family: var(--font-header);
    font-size: 12px;
    font-weight: 700;
    padding: 10px 18px;
    cursor: pointer;
    transition: all 0.2s ease;
    clip-path: polygon(0 0, 90% 0, 100% 30%, 100% 100%, 10% 100%, 0 70%);
    letter-spacing: 1px;
}

.btn-cyber-sm:hover:not(:disabled) {
    border-color: var(--color-cyan);
    background: rgba(0, 240, 255, 0.15);
    color: #fff;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.btn-cyber-sm:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* SIDE INFO / DETAILS */
.side-info {
    border-left: 1px solid rgba(0, 240, 255, 0.15);
    padding-left: 40px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.system-stats h3 {
    font-family: var(--font-header);
    color: var(--color-cyan);
    font-size: 16px;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.system-stats p {
    color: var(--text-dim);
    line-height: 1.6;
    margin-bottom: 25px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px dashed rgba(0, 240, 255, 0.1);
    font-size: 14px;
}

.stat-row span:first-child {
    color: var(--text-dim);
}

/* MISSION SCREEN */
.screen-title {
    font-family: var(--font-header);
    color: #fff;
    font-size: 24px;
    text-align: center;
    margin-bottom: 30px;
    letter-spacing: 4px;
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    flex-grow: 1;
    margin-bottom: 20px;
    overflow-y: auto;
    max-height: calc(100% - 100px);
    padding-right: 5px;
}

.mission-card {
    background: rgba(10, 25, 40, 0.5);
    border: 1px solid rgba(0, 240, 255, 0.15);
    padding: 25px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
    position: relative;
    border-radius: 4px;
    cursor: pointer;
}

.mission-card:hover {
    border-color: var(--color-cyan);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
    transform: translateY(-5px);
    background: rgba(15, 35, 55, 0.7);
}

.mission-num {
    font-size: 12px;
    color: var(--color-amber);
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.mission-card h3 {
    font-family: var(--font-header);
    color: #fff;
    font-size: 18px;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.mission-desc {
    color: var(--text-dim);
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 20px;
    flex-grow: 1;
}

.mission-meta {
    font-size: 12px;
    border-top: 1px dashed rgba(0, 240, 255, 0.1);
    padding-top: 12px;
    margin-bottom: 15px;
    display: flex;
    justify-content: space-between;
}

.difficulty.easy { color: var(--color-green); }
.difficulty.medium { color: var(--color-amber); }
.difficulty.hard { color: var(--color-red); }
.difficulty.expert { color: #ff00ff; text-shadow: 0 0 8px rgba(255, 0, 255, 0.6); }

.btn-back {
    align-self: flex-start;
    border-color: var(--text-dim);
    color: var(--text-dim);
}

/* BRIEFING SCREEN OVERLAY */
#briefing-screen {
    background-color: rgba(5, 12, 20, 0.95);
    justify-content: center;
    align-items: center;
}

.briefing-box {
    width: 100%;
    max-width: 800px;
    background: rgba(10, 20, 30, 0.9);
    border: 1px solid var(--color-cyan);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.2);
    padding: 35px;
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.briefing-title {
    font-family: var(--font-header);
    color: var(--color-amber);
    font-size: 24px;
    border-bottom: 2px solid var(--color-amber);
    padding-bottom: 10px;
    letter-spacing: 3px;
}

.briefing-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.briefing-text {
    line-height: 1.6;
    color: var(--text-color);
    font-size: 15px;
}

.briefing-objectives h4 {
    font-family: var(--font-header);
    color: var(--color-cyan);
    font-size: 13px;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.briefing-objectives ul {
    list-style-type: none;
}

.briefing-objectives li {
    padding-left: 20px;
    position: relative;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-dim);
}

.briefing-objectives li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--color-cyan);
    font-weight: bold;
}

.briefing-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
}

/* HANGAR AND UPGRADE SCREEN */
.hangar-layout {
    display: grid;
    grid-template-columns: 4.5fr 5.5fr;
    gap: 40px;
    flex-grow: 1;
    margin-bottom: 30px;
}

.hangar-preview {
    background: rgba(10, 22, 35, 0.4);
    border: 1px solid rgba(0, 240, 255, 0.1);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    padding: 20px;
}

.aircraft-blueprint {
    width: 80%;
    height: 70%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.blueprint-svg {
    width: 100%;
    height: 100%;
    max-height: 280px;
}

/* Blueprint Sweep Animation */
.blueprint-path {
    stroke-dasharray: 500;
    stroke-dashoffset: 500;
    animation: draw 4s ease-out forwards;
}

@keyframes draw {
    to {
        stroke-dashoffset: 0;
    }
}

.radar-sweep {
    position: absolute;
    width: 100%;
    height: 4px;
    background: linear-gradient(transparent, var(--color-cyan), transparent);
    opacity: 0.3;
    animation: radar-sweep-anim 3s infinite linear;
}

@keyframes radar-sweep-anim {
    0% { top: 0%; }
    100% { top: 100%; }
}

.points-indicator {
    font-size: 16px;
    font-weight: bold;
    border: 1px solid var(--border-color);
    padding: 12px 20px;
    background: rgba(0, 240, 255, 0.05);
    margin-top: 15px;
    letter-spacing: 1px;
}

.upgrades-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    overflow-y: auto;
    padding-right: 10px;
}

.upgrade-item {
    background: rgba(12, 25, 40, 0.6);
    border: 1px solid rgba(0, 240, 255, 0.15);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.upgrade-item:hover {
    border-color: var(--color-cyan);
    background: rgba(15, 30, 50, 0.8);
}

.up-meta h4 {
    font-family: var(--font-header);
    color: #fff;
    font-size: 14px;
    margin-bottom: 5px;
    letter-spacing: 1px;
}

.up-meta p {
    font-size: 11px;
    color: var(--text-dim);
}

.up-controls {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

.level-indicator {
    font-size: 12px;
    color: var(--color-amber);
    font-weight: 700;
}

.hangar-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* CONTROLS SCREEN */
.controls-layout {
    display: flex;
    flex-direction: column;
    gap: 30px;
    flex-grow: 1;
    margin-bottom: 30px;
    justify-content: center;
}

.control-group {
    background: rgba(10, 25, 40, 0.4);
    border: 1px solid rgba(0, 240, 255, 0.1);
    padding: 20px 30px;
    border-radius: 4px;
}

.control-group h3 {
    font-family: var(--font-header);
    color: var(--color-cyan);
    font-size: 15px;
    margin-bottom: 15px;
    letter-spacing: 2px;
    border-bottom: 1px solid rgba(0, 240, 255, 0.1);
    padding-bottom: 8px;
}

.control-row {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    font-size: 14px;
}

.control-row:last-child {
    margin-bottom: 0;
}

.key {
    background: rgba(0, 240, 255, 0.15);
    border: 1px solid var(--color-cyan);
    padding: 4px 10px;
    border-radius: 3px;
    color: #fff;
    font-weight: bold;
    min-width: 60px;
    text-align: center;
    margin-right: 15px;
    font-size: 12px;
    display: inline-block;
    box-shadow: 0 0 5px rgba(0, 240, 255, 0.2);
}

.control-row .desc {
    color: var(--text-color);
}

/* GAME CANVAS CONTAINER */
#game-container {
    width: 100%;
    height: 100%;
    position: relative;
    display: none; /* Blocked until game starts */
    background: #020406;
}

#gameCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

/* HUD LAYOUT */
#game-hud {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: 5;
    pointer-events: none; /* Click straight through to canvas */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 20px;
    box-sizing: border-box;
}

/* HUD PANELS */
.hud-panel {
    background: rgba(10, 20, 30, 0.7);
    border: 1px solid var(--border-color);
    padding: 10px 15px;
    border-radius: 4px;
    backdrop-filter: blur(5px);
    pointer-events: auto; /* Buttons or toggles can be clicked */
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.panel-label {
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: 1px;
}

.progress-bar-container {
    width: 160px;
    height: 10px;
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(0, 240, 255, 0.15);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #0088cc, var(--color-cyan));
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
    transition: width 0.1s ease;
}

.panel-value {
    font-size: 12px;
    font-weight: bold;
    text-align: right;
    color: #fff;
}

/* TOP CENTER WARNING FLASHER */
.hud-top {
    display: flex;
    justify-content: space-between;
    width: 100%;
    align-items: flex-start;
}

.hud-center-alert {
    background: rgba(255, 0, 0, 0.05);
    border: 1px solid rgba(255, 51, 51, 0.3);
    padding: 10px 25px;
    border-radius: 4px;
    font-family: var(--font-header);
    font-weight: 700;
    color: var(--color-red);
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.hud-center-alert.alert-active {
    opacity: 1;
    animation: flash-warning 0.5s infinite alternate;
}

@keyframes flash-warning {
    0% { border-color: rgba(255, 51, 51, 0.3); background-color: rgba(255, 0, 0, 0.05); }
    100% { border-color: var(--color-red); background-color: rgba(255, 0, 0, 0.2); box-shadow: 0 0 15px rgba(255, 51, 51, 0.3); }
}

.warning-flasher {
    width: 8px;
    height: 8px;
    background-color: var(--color-red);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--color-red);
}

.score-panel {
    text-align: right;
    width: 190px;
}

.hud-score-row {
    font-size: 18px;
    font-weight: bold;
    color: #fff;
}

.score-value {
    color: var(--color-cyan);
    text-shadow: 0 0 5px rgba(0, 240, 255, 0.3);
}

.divider {
    color: var(--text-dim);
}

.objective-value {
    font-size: 11px;
    color: var(--color-amber);
    display: block;
    margin-top: 2px;
    letter-spacing: 0.5px;
}

/* LEFT SIDE GAUGES */
.hud-left {
    position: absolute;
    left: 20px;
    top: 100px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tactical-gauge {
    background: rgba(10, 20, 30, 0.7);
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 4px;
    backdrop-filter: blur(5px);
    width: 110px;
    text-align: center;
}

.gauge-label {
    font-size: 8px;
    color: var(--text-dim);
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}

.gauge-value {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
}

.progress-bar-container-vertical {
    width: 8px;
    height: 80px;
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(0, 240, 255, 0.15);
    margin: 5px auto;
    border-radius: 1px;
    position: relative;
}

.progress-bar-vertical {
    width: 100%;
    position: absolute;
    bottom: 0;
    background: linear-gradient(to top, var(--color-cyan), var(--color-red));
    transition: height 0.1s ease;
}

/* RIGHT SIDE WEAPONS */
.hud-right {
    position: absolute;
    right: 20px;
    top: 100px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.weapon-bay {
    background: rgba(10, 20, 30, 0.7);
    border: 1px solid var(--border-color);
    padding: 10px 12px;
    border-radius: 4px;
    backdrop-filter: blur(5px);
    width: 160px;
}

.weapon-name {
    font-size: 9px;
    color: var(--text-dim);
    font-weight: 700;
    margin-bottom: 4px;
}

.weapon-status {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-dim);
}

.missile-slots {
    display: flex;
    gap: 4px;
    margin-top: 5px;
}

.missile-slot {
    width: 8px;
    height: 18px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    position: relative;
    border-radius: 1px;
}

.missile-slot.loaded::after {
    content: '';
    position: absolute;
    top: 2px; left: 2px; right: 2px; bottom: 2px;
    background-color: var(--color-cyan);
    box-shadow: 0 0 5px var(--color-cyan);
}

.shield-count {
    font-size: 14px;
    font-weight: bold;
    color: var(--color-amber);
    margin-top: 2px;
}

/* BOTTOM RADAR */
.hud-bottom-radar {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
    pointer-events: auto;
}

.radar-scope {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    border: 1px solid rgba(0, 240, 255, 0.3);
    background: rgba(5, 15, 25, 0.8);
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.1), inset 0 0 10px rgba(0, 240, 255, 0.15);
}

.radar-sweep-effect {
    position: absolute;
    width: 100%;
    height: 100%;
    background: conic-gradient(from 0deg, rgba(0, 240, 255, 0.2) 0deg, transparent 90deg);
    border-radius: 50%;
    animation: radar-rotate 4s infinite linear;
}

@keyframes radar-rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.radar-center-blip {
    position: absolute;
    top: calc(50% - 2px);
    left: calc(50% - 2px);
    width: 4px;
    height: 4px;
    background-color: #fff;
    border-radius: 50%;
    box-shadow: 0 0 4px #fff;
}

.radar-blip {
    position: absolute;
    width: 4px;
    height: 4px;
    background-color: var(--color-red);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--color-red);
    transform: translate(-50%, -50%);
}

.radar-blip.friend {
    background-color: var(--color-green);
    box-shadow: 0 0 6px var(--color-green);
}

.radar-info {
    font-size: 8px;
    color: var(--text-dim);
    margin-top: 5px;
    letter-spacing: 0.5px;
}

/* OVERLAY SCREENS FOR PAUSE/GAMEOVER/VICTORY */
.hud-overlay-screen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(5, 10, 15, 0.95);
    border: 1px solid var(--border-color);
    box-shadow: 0 0 40px rgba(0,240,255,0.2);
    padding: 35px 50px;
    border-radius: 4px;
    z-index: 100;
    text-align: center;
    display: none; /* Controlled by JS */
    min-width: 400px;
    backdrop-filter: blur(8px);
}

.hud-overlay-screen h2 {
    font-family: var(--font-header);
    font-size: 28px;
    margin-bottom: 15px;
    letter-spacing: 3px;
}

.hud-overlay-screen p {
    color: var(--text-dim);
    margin-bottom: 25px;
    font-size: 14px;
    line-height: 1.5;
}

.overlay-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.score-summary {
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.1);
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 25px;
    font-size: 16px;
    font-weight: 700;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* UTILITY CLASSES */
.text-danger { color: var(--color-red) !important; text-shadow: 0 0 10px rgba(255, 51, 51, 0.3); }
.text-success { color: var(--color-green) !important; text-shadow: 0 0 10px rgba(57, 255, 20, 0.3); }
.text-warning { color: var(--color-amber) !important; }

.cyan-glow { color: var(--color-cyan); text-shadow: 0 0 8px rgba(0, 240, 255, 0.5); }
.amber-glow { color: var(--color-amber); text-shadow: 0 0 8px rgba(255, 140, 0, 0.5); }
.green-glow { color: var(--color-green); text-shadow: 0 0 8px rgba(57, 255, 20, 0.5); }

@keyframes pulse {
    0% { opacity: 0.3; }
    100% { opacity: 1; }
}

.pulse-indicator {
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: var(--color-green);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--color-green);
    margin-right: 8px;
    vertical-align: middle;
    animation: pulse 1s infinite alternate;
}

/* PHASE 4: MOBILE & DYNAMIC CONTROLS STYLES */

#mobile-controls-container {
    position: absolute;
    bottom: 30px;
    left: 0;
    width: 100%;
    height: 180px;
    display: none; /* Block on mobile */
    pointer-events: none; /* Allow click through container itself */
    z-index: 99;
}

.mobile-btn-group {
    position: absolute;
    bottom: 0;
    display: flex;
    gap: 15px;
    pointer-events: auto; /* Allow buttons to capture pointer inputs */
}

.mobile-btn-group.left-group {
    left: 25px;
}

.mobile-btn-group.right-group {
    right: 25px;
    flex-direction: row-reverse;
}

.btn-mobile {
    width: 75px;
    height: 75px;
    min-width: 65px;
    min-height: 65px;
    border-radius: 50%;
    background: rgba(5, 12, 20, 0.7);
    border: 2px solid var(--color-cyan);
    color: #fff;
    font-family: 'Orbitron', sans-serif;
    font-size: 10px;
    font-weight: 700;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.25), inset 0 0 8px rgba(0, 240, 255, 0.1);
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
    transition: transform 0.1s ease, background 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.btn-mobile:active {
    transform: scale(0.9);
    background: rgba(0, 240, 255, 0.25);
    border-color: #fff;
    box-shadow: 0 0 20px var(--color-cyan), inset 0 0 12px rgba(0, 240, 255, 0.4);
}

/* SPECIFIC MOBILE ACTIONS STYLING */
#btn-mobile-shield {
    border-color: var(--color-cyan);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.25);
}
#btn-mobile-roll {
    border-color: var(--color-green);
    box-shadow: 0 0 10px rgba(57, 255, 20, 0.25);
}
#btn-mobile-roll:active {
    box-shadow: 0 0 20px var(--color-green);
}
#btn-mobile-fire {
    border-color: var(--color-red);
    box-shadow: 0 0 10px rgba(255, 51, 51, 0.25);
}
#btn-mobile-fire:active {
    box-shadow: 0 0 20px var(--color-red);
}
#btn-mobile-missile {
    border-color: var(--color-amber);
    box-shadow: 0 0 10px rgba(255, 140, 0, 0.25);
}
#btn-mobile-missile:active {
    box-shadow: 0 0 20px var(--color-amber);
}

/* STARS progresS VISUALIZATION */
.stars-container {
    display: flex;
    gap: 4px;
    font-size: 14px;
    color: var(--color-amber);
    text-shadow: 0 0 6px rgba(255, 140, 0, 0.4);
    margin-top: 5px;
    font-family: monospace;
}

.stars-glow {
    font-size: 24px;
    color: var(--color-amber);
    text-shadow: 0 0 12px rgba(255, 140, 0, 0.7);
    letter-spacing: 2px;
}

/* HANGAR APPEARANCE SKIN CHIPS STYLES */
.skin-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: flex-start;
    margin-top: 5px;
}

.skin-thumb {
    cursor: pointer;
    border: 1px solid rgba(0, 240, 255, 0.25);
    background: rgba(4, 10, 16, 0.8);
    padding: 10px 14px;
    border-radius: 4px;
    font-family: 'Orbitron', sans-serif;
    font-size: 11px;
    letter-spacing: 0.5px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 140px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    color: var(--text-dim);
    box-shadow: 0 0 8px rgba(0,0,0,0.5);
    user-select: none;
}

.skin-thumb:hover {
    border-color: rgba(0, 240, 255, 0.6);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.15);
    color: #fff;
}

.skin-thumb.active {
    border: 1.5px solid var(--color-cyan);
    color: #fff;
    background: rgba(0, 240, 255, 0.08);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.3), inset 0 0 6px rgba(0, 240, 255, 0.15);
}

.skin-color-preview {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 8px;
    box-shadow: 0 0 4px currentColor;
}


/* ============================================================
   RESPONSIVE LAYER (Faz: Responsive Düzeltme)
   Masaüstü görünümünü bozmaz; yalnızca dar ekranlarda devreye girer.
   Kırılma noktaları: 900px (tablet), 600px (telefon), 400px (küçük telefon)
   ============================================================ */

/* Genel: yatay taşmayı kes */
html, body { max-width: 100vw; overflow-x: hidden; }

/* ---------- TABLET ve altı: <= 900px ---------- */
@media (max-width: 900px) {
    /* UI ekranları daha fazla yer kaplasın, padding küçülsün */
    .ui-screen {
        width: 94%;
        height: 90%;
        padding: 18px;
        /* DÜZELTME (mobil): tüm ekranlar dikey kaydırılabilsin -> geri tuşu/içerik her zaman erişilir */
        overflow-y: auto;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
    }

    /* DÜZELTME (mobil): başlık taşıp yatay kaymaya yol açmasın */
    h1.glitch { max-width: 100%; overflow-wrap: break-word; }
    .title-container { width: 100%; }

    .cyber-header {
        font-size: 10px;
        letter-spacing: 1px;
        flex-wrap: wrap;
        gap: 4px;
    }

    /* Ana menü başlığı ölçeklensin */
    h1.glitch { font-size: 56px; letter-spacing: 8px; }
    .subtitle { font-size: 13px; letter-spacing: 4px; }
    .title-container { margin-top: 16px; margin-bottom: 28px; }

    /* Menü iki sütun yerine tek sütun */
    .menu-layout { grid-template-columns: 1fr; gap: 20px; }

    /* Görev kartları 3 -> 2 sütun */
    .mission-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }

    /* Hangar iki sütun -> tek sütun, dikey akış */
    .hangar-layout { grid-template-columns: 1fr; gap: 20px; }

    .screen-title { font-size: 20px; letter-spacing: 2px; margin-bottom: 18px; }

    /* ---- IN-GAME HUD ---- */
    #game-hud { padding: 10px; }

    /* Üst panel sıkışsın, taşmasın */
    .progress-bar-container { width: 120px; }
    .score-panel { width: auto; min-width: 130px; }
    .hud-score-row { font-size: 14px; }

    /* Yan panelleri küçült */
    .hud-left  { top: 78px; left: 10px; gap: 12px; }
    .hud-right { top: 78px; right: 10px; gap: 10px; }
    .tactical-gauge { width: 88px; padding: 7px; }
    .weapon-bay { width: 132px; padding: 7px 9px; }
    .weapon-status { font-size: 11px; }
    .weapon-name { font-size: 8px; }

    .radar-scope { width: 90px; height: 90px; }
}

/* ---------- TELEFON: <= 600px ---------- */
@media (max-width: 600px) {
    .ui-screen { width: 96%; height: 92%; padding: 14px; border-radius: 2px; }

    h1.glitch { font-size: 40px; letter-spacing: 5px; }
    .subtitle { font-size: 11px; letter-spacing: 3px; }

    /* Header'ı dikey diz, classification'ı küçült */
    .cyber-header { flex-direction: column; align-items: flex-start; font-size: 9px; }
    .cyber-header .classification { font-size: 8px; }

    /* Görev kartları tek sütun */
    .mission-grid { grid-template-columns: 1fr; gap: 12px; max-height: calc(100% - 80px); }
    .mission-card { padding: 16px; }

    .screen-title { font-size: 17px; }

    /* ---- KONTROLLER SAYFASI mobil uyumu ---- */
    .controls-layout { gap: 16px; justify-content: flex-start; }
    .control-group { padding: 14px 16px; }
    .control-group h3 { font-size: 13px; margin-bottom: 10px; letter-spacing: 1px; }
    /* Satırları dikey diz: tuşlar üstte sarmalı, açıklama altta */
    .control-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
        font-size: 13px;
        margin-bottom: 14px;
        flex-wrap: wrap;
    }
    .control-row .key {
        margin-right: 6px;
        margin-bottom: 4px;
        min-width: 0;
        padding: 3px 8px;
        font-size: 11px;
    }
    .control-row .desc { font-size: 12px; line-height: 1.4; }

    /* ---- HUD: dar ekranda paneller küçük ve kenara yapışık ---- */
    #game-hud { padding: 6px; }

    .hud-top { gap: 6px; }
    .hud-panel { padding: 6px 9px; }
    .panel-label { font-size: 8px; }
    .panel-value { font-size: 10px; }
    .progress-bar-container { width: 90px; height: 8px; }
    .score-panel { min-width: 96px; }
    .hud-score-row { font-size: 12px; }
    .objective-value { font-size: 9px; }

    /* Üst-orta uyarı kutusu küçülsün, taşmasın */
    .hud-center-alert { padding: 6px 10px; font-size: 9px; }

    /* Yan paneller iyice incelsin */
    .hud-left  { top: 64px; left: 6px; gap: 8px; }
    .hud-right { top: 64px; right: 6px; gap: 7px; }
    .tactical-gauge { width: 70px; padding: 5px; }
    .gauge-value { font-size: 12px; }
    .gauge-label { font-size: 7px; }
    .progress-bar-container-vertical { height: 56px; }

    .weapon-bay { width: 108px; padding: 5px 7px; }
    .weapon-name { font-size: 7px; margin-bottom: 2px; }
    .weapon-status { font-size: 9px; }
    .missile-slot { width: 6px; height: 13px; }
    .shield-count { font-size: 11px; }

    .radar-scope { width: 72px; height: 72px; }
    .radar-info { font-size: 7px; }

    /* Mobil kontrol butonları biraz küçülsün ki radar/HUD ile çakışmasın */
    .btn-mobile { width: 62px; height: 62px; min-width: 56px; min-height: 56px; font-size: 9px; }
    .mobile-btn-group { gap: 10px; }
    .mobile-btn-group.left-group { left: 12px; }
    .mobile-btn-group.right-group { right: 12px; }
    #mobile-controls-container { bottom: 16px; height: 150px; }

    /* Overlay ekranlar (pause/gameover/victory) sığsın */
    .hud-overlay-screen { width: 92%; padding: 20px; }
}

/* ---------- KÜÇÜK TELEFON: <= 400px ---------- */
@media (max-width: 400px) {
    h1.glitch { font-size: 32px; letter-spacing: 3px; }

    /* HUD'u en sıkı moda al */
    .progress-bar-container { width: 72px; }
    .score-panel { min-width: 84px; }
    .panel-value { font-size: 9px; }

    .hud-left  { top: 56px; }
    .hud-right { top: 56px; }
    .tactical-gauge { width: 60px; }
    .weapon-bay { width: 96px; }
    .weapon-status { font-size: 8px; }

    .radar-scope { width: 60px; height: 60px; }

    .btn-mobile { width: 54px; height: 54px; min-width: 48px; min-height: 48px; font-size: 8px; }
}

/* ---------- YATAY (LANDSCAPE) telefon: alçak ve geniş ---------- */
@media (max-height: 500px) and (orientation: landscape) {
    /* Yan panelleri yukarı çek, üst panelle çakışmasın */
    .hud-left  { top: 60px; }
    .hud-right { top: 60px; }

    /* Başlık ekranında dikey alan az; başlığı küçült */
    h1.glitch { font-size: 38px; }
    .title-container { margin-top: 8px; margin-bottom: 16px; }
    .menu-layout { gap: 12px; }

    /* Radar küçülsün, dikey alanı yemesin */
    .radar-scope { width: 64px; height: 64px; }

    /* Mobil butonlar alta yapışsın ama küçük kalsın */
    #mobile-controls-container { bottom: 8px; height: 110px; }
    .btn-mobile { width: 56px; height: 56px; min-width: 50px; min-height: 50px; }
}

/* ============================================================
   PULL-TO-REFRESH GÖSTERGESİ (mobil, oyun dışı ekranlar)
   ============================================================ */
#ptr-indicator {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translate(-50%, -60px);
    z-index: 100000;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    background: rgba(5, 12, 20, 0.95);
    border: 1px solid var(--color-cyan);
    border-radius: 0 0 8px 8px;
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
    font-family: var(--font-header);
    font-size: 11px;
    letter-spacing: 1px;
    color: var(--color-cyan);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

#ptr-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(0, 240, 255, 0.25);
    border-top-color: var(--color-cyan);
    border-radius: 50%;
}

#ptr-indicator.ptr-ready {
    color: var(--color-green);
    border-color: var(--color-green);
    box-shadow: 0 0 15px rgba(57, 255, 20, 0.4);
}
#ptr-indicator.ptr-ready #ptr-spinner {
    border-color: rgba(57, 255, 20, 0.25);
    border-top-color: var(--color-green);
}

#ptr-indicator.ptr-refreshing #ptr-spinner {
    animation: ptr-spin 0.6s linear infinite;
}

@keyframes ptr-spin {
    to { transform: rotate(360deg); }
}