/* ==========================================================================
   POLYGONLE - Stili Grafici Puliti (Simboli in Alto + Flip Animation)
   ========================================================================== */

:root {
    --bg-color: #FDFBF7;
    --card-bg: #FFFFFF;
    --text-color: #4A403A;
    --text-muted: #8C827A;
    --border-color: #E2DBD0;
    --border-active: #5B4EAD;
    
    --color-correct: #7DA47B;
    --color-present: #E5B25D;
    --color-absent: #B8B0A6;
    --color-empty: #FFFFFF;

    --accent-color: #D97757;
    --accent-hover: #C66546;
    --surrender-color: #CF6679;

    --font-heading: 'Fredoka', sans-serif;
    --font-body: 'Nunito', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-body);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 10px;
}

.app-header {
    width: 100%;
    max-width: 440px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 2px solid var(--border-color);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--accent-color);
    letter-spacing: 2px;
}

.icon-btn {
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.2s;
}

.icon-btn:hover {
    background-color: var(--border-color);
}

.coffee-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    background-color: #FFF4E5;
    color: #D97757;
    border: 1px solid #F7D7C4;
    padding: 6px 12px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.85rem;
    transition: transform 0.2s, background-color 0.2s;
}

.coffee-btn:hover {
    background-color: #F7D7C4;
    transform: translateY(-1px);
}

.game-controls {
    width: 100%;
    max-width: 440px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 15px 0 10px 0;
}

.mode-selector {
    display: flex;
    background-color: var(--border-color);
    padding: 3px;
    border-radius: 12px;
}

.mode-btn {
    border: none;
    background: transparent;
    padding: 6px 12px;
    border-radius: 10px;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.mode-btn.active {
    background-color: var(--card-bg);
    color: var(--text-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.action-btn {
    border: none;
    padding: 7px 14px;
    border-radius: 10px;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.2s;
}

.surrender-btn {
    background-color: #FDE8E8;
    color: var(--surrender-color);
}

.surrender-btn:hover {
    background-color: #F8D7DA;
}

.game-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 440px;
    margin-bottom: 15px;
}

.symbols-row {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    width: 100%;
    margin-bottom: 12px;
    height: 40px;
}

.symbol-box {
    display: flex;
    justify-content: center;
    align-items: center;
}

.shape-icon {
    width: 28px;
    height: 28px;
}

.board {
    display: grid;
    grid-template-rows: repeat(6, 1fr);
    gap: 8px;
    width: 100%;
}

.row {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.tile {
    width: 100%;
    aspect-ratio: 1;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--color-empty);
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-color);
    user-select: none;
    transition: border-color 0.2s, transform 0.1s;
}

.tile.active {
    border: 3px solid var(--border-active);
}

.tile.pop {
    animation: popKey 0.1s ease-in-out;
}

@keyframes popKey {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.tile.flip {
    animation: flipTile 0.5s ease forwards;
}

@keyframes flipTile {
    0% { transform: rotateX(0deg); }
    50% { transform: rotateX(90deg); }
    100% { transform: rotateX(0deg); }
}

.tile.correct {
    background-color: var(--color-correct);
    border-color: var(--color-correct);
    color: #FFFFFF;
}

.tile.present {
    background-color: var(--color-present);
    border-color: var(--color-present);
    color: #FFFFFF;
}

.tile.absent {
    background-color: var(--color-absent);
    border-color: var(--color-absent);
    color: #FFFFFF;
}

@keyframes bounceWin {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.row.win .tile {
    animation: bounceWin 0.6s ease;
}

.keyboard {
    width: 100%;
    max-width: 440px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    user-select: none;
}

.keyboard-row {
    display: flex;
    justify-content: center;
    gap: 4px;
}

.key {
    background-color: #EFEAE1;
    border: none;
    border-radius: 6px;
    height: 48px;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    cursor: pointer;
    transition: background-color 0.2s;
}

.key:hover {
    background-color: #E2DBD0;
}

.key.large {
    flex: 1.5;
    font-size: 0.85rem;
}

.key.correct {
    background-color: var(--color-correct);
    color: white;
}

.key.present {
    background-color: var(--color-present);
    color: white;
}

.key.absent {
    background-color: var(--color-absent);
    color: white;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(74, 64, 58, 0.4);
    backdrop-filter: blur(3px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.overlay.hidden {
    display: none;
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    background-color: var(--card-bg);
    width: 90%;
    max-width: 440px;
    padding: 24px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.6rem;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-content h2 {
    font-family: var(--font-heading);
    color: var(--accent-color);
    margin-bottom: 15px;
}

.rules-body p {
    margin-bottom: 12px;
    line-height: 1.5;
}

.rule-box {
    background-color: var(--bg-color);
    padding: 12px;
    border-radius: 10px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
}

.rule-box h3 {
    font-size: 1rem;
    margin-bottom: 6px;
    color: var(--text-color);
}

.rule-box ul {
    margin-left: 20px;
    font-size: 0.9rem;
    line-height: 1.4;
}

.example-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
    font-size: 0.85rem;
}

.example-row .tile {
    width: 32px;
    height: 32px;
    font-size: 1rem;
}

.primary-btn {
    width: 100%;
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 10px;
    font-family: var(--font-heading);
    font-size: 1rem;
    cursor: pointer;
    margin-top: 10px;
    transition: background-color 0.2s;
}

.primary-btn:hover {
    background-color: var(--accent-hover);
}

.solution-display {
    background-color: var(--bg-color);
    padding: 12px;
    border-radius: 10px;
    text-align: center;
    margin: 15px 0;
    font-size: 1.1rem;
    border: 1px dashed var(--accent-color);
}

.solution-display strong {
    color: var(--accent-color);
    letter-spacing: 2px;
}

.toast {
    position: fixed;
    top: 75px;
    background-color: var(--text-color);
    color: white;
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
    z-index: 2000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: opacity 0.3s;
}

.toast.hidden {
    opacity: 0;
    pointer-events: none;
}