:root {
    /* Paleta de Cores - Padrão Escolai */
    --color-bg: #F5F7FA;
    --color-text: #2C3E50;
    --color-accent: #81C784;
    /* Verde Menta */
    --color-accent-hover: #66BB6A;
    --color-error: #E57373;
    /* Vermelho Suave */
    --color-primary: #4FC3F7;
    /* Azul Claro */
    --color-primary-dark: #29B6F6;
    --color-secondary: #CFD8DC;
    /* Cinza claro */
    --color-secondary-dark: #B0BEC5;
    --color-white: #FFFFFF;
    --color-shadow: rgba(44, 62, 80, 0.1);

    /* Fontes */
    --font-main: 'Nunito', 'Segoe UI', sans-serif;
    --font-mono: 'Share Tech Mono', monospace;
}

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

body {
    background-color: #e0e5ec;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-family: var(--font-main);
    color: var(--color-text);
    overflow: hidden;
}

#game-container {
    width: 1280px;
    height: 700px;
    background-color: var(--color-bg);
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

/* Telas (Screens) */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
    background-color: var(--color-bg);
    transition: opacity 0.3s ease;
}

.screen.hidden {
    opacity: 0;
    pointer-events: none;
    z-index: 0;
}

/* Typography & General UI */
h1 {
    font-size: 3rem;
    color: var(--color-text);
    margin-bottom: 1rem;
    text-align: center;
}

h2 {
    font-size: 2rem;
    color: var(--color-primary-dark);
}

p {
    font-size: 1.2rem;
    color: #546E7A;
    margin-bottom: 2rem;
    max-width: 600px;
    text-align: center;
    line-height: 1.6;
}

.btn {
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    padding: 1rem 3rem;
    font-size: 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    font-weight: bold;
    box-shadow: 0 4px 6px var(--color-shadow);
    transition: transform 0.1s, background-color 0.2s;
}

.btn:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

/* Tela de Jogo */
#game-screen {
    justify-content: flex-start;
    padding: 0;
}

header {
    width: 100%;
    height: 80px;
    background-color: var(--color-white);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    box-shadow: 0 2px 10px var(--color-shadow);
    z-index: 20;
}

#timer-box {
    background: var(--color-bg);
    padding: 10px 20px;
    border-radius: 8px;
    border: 1px solid var(--color-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

#timer-display {
    font-family: var(--font-mono);
    font-size: 2rem;
    color: var(--color-error);
}

#game-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--color-secondary-dark);
    letter-spacing: 2px;
}

/* Grid de Armários */
#lockers-grid {
    width: 100%;
    height: calc(100% - 80px);
    padding: 40px;
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    /* Ajustado para caber 21 itens (200-220) */
    grid-template-rows: repeat(3, 1fr);
    gap: 20px;
    overflow-y: auto;
}

/* Locker Styles */
.locker {
    position: relative;
    width: 100%;
    height: 100%;
    perspective: 800px;
}

.locker-door {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-secondary);
    border-radius: 8px;
    border: 2px solid var(--color-secondary-dark);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
    cursor: default;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.05);
}

.locker-door.interactive {
    cursor: pointer;
    background-color: #E0E0E0;
    /* Leve destaque */
}

.locker-door.interactive:hover {
    background-color: #ECEFF1;
}

.locker.open .locker-door {
    transform: rotateY(-110deg);
}

/* Detalhes da porta */
.locker-number {
    background-color: var(--color-white);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: bold;
    color: var(--color-text);
    align-self: flex-start;
    border: 1px solid var(--color-secondary-dark);
}

.locker-vent {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 10px;
}

.vent-slot {
    width: 40px;
    height: 4px;
    background-color: var(--color-secondary-dark);
    border-radius: 2px;
    opacity: 0.5;
}

.locker-handle {
    width: 8px;
    height: 25px;
    background-color: var(--color-text);
    border-radius: 2px;
    margin-right: 10px;
    align-self: flex-end;
    opacity: 0.8;
}

.locker-led {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-error);
    /* Vermelho -> Bloqueado */
    opacity: 0.8;
    position: absolute;
    top: 12px;
    right: 12px;
}

.locker.available .locker-led {
    background-color: var(--color-accent);
    /* Verde */
    opacity: 1;
    box-shadow: 0 0 5px var(--color-accent);
}

.locker.open .locker-led {
    background-color: var(--color-accent);
    opacity: 0.5;
}

/* Interior do Armário */
.locker-interior {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #455A64;
    border-radius: 8px;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: -1;
    /* Fica atrás da porta */
}

/* Modal Keypad */
.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(44, 62, 80, 0.5);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-overlay.hidden {
    display: none;
}

.keypad-container {
    background-color: var(--color-white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    width: 320px;
    text-align: center;
}

#keypad-message {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: 10px;
    min-height: 1.5rem;
}

#keypad-display {
    background-color: #ECEFF1;
    font-family: var(--font-mono);
    font-size: 2rem;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    letter-spacing: 5px;
    color: var(--color-text);
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-secondary);
}

.keypad-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.keypad-btn {
    background-color: var(--color-bg);
    border: 1px solid var(--color-secondary);
    border-radius: 8px;
    padding: 15px 0;
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--color-text);
    cursor: pointer;
    transition: all 0.1s;
}

.keypad-btn:hover {
    background-color: var(--color-secondary);
}

.keypad-btn:active {
    transform: scale(0.95);
}

.keypad-btn.action {
    background-color: var(--color-primary);
    color: white;
    border: none;
}

.keypad-btn.clear {
    background-color: var(--color-error);
    color: white;
    border: none;
}

.close-modal-btn {
    margin-top: 20px;
    background: none;
    border: none;
    color: #90A4AE;
    cursor: pointer;
    text-decoration: underline;
}

/* Estados de Vitória/Derrota */
.result-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
}

.text-success {
    color: var(--color-accent);
}

.text-fail {
    color: var(--color-error);
}