* { margin: 0; padding: 0; box-sizing: border-box; }
:root { --bg-primary: #121214; --bg-secondary: #1a1a1e; --bg-tertiary: #222226; --text-primary: #ffffff; --text-secondary: #8b8b8b; --text-muted: #5a5a5a; --border-color: #2a2a2e; --green: #4ade80; --green-bg: rgba(74,222,128,0.15); --yellow: #fbbf24; --yellow-bg: rgba(251,191,36,0.15); --red: #f87171; --red-bg: rgba(248,113,113,0.15); }
html, body { height: 100%; }
body { font-family: Inter, system-ui, sans-serif; background: var(--bg-primary); color: var(--text-primary); line-height: 1.5; -webkit-overflow-scrolling: touch; overscroll-behavior: contain; }
html { -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; }
input, button { -webkit-appearance: none; -moz-appearance: none; appearance: none; }
.app { max-width: 500px; margin: 0 auto; padding: 0 16px; min-height: 100vh; display: flex; flex-direction: column; }
.header { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; border-bottom: 1px solid var(--border-color); }
.header-left, .header-right { width: 48px; }
.header-center { flex: 1; text-align: center; }
.logo { font-size: 24px; font-weight: 800; letter-spacing: 2px; }
.icon-btn { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: transparent; border: none; color: var(--text-secondary); cursor: pointer; border-radius: 8px; transition: all 0.2s; }
.icon-btn:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.game-number { text-align: center; padding: 12px 0; color: var(--text-secondary); font-size: 14px; font-weight: 500; }
.input-container { padding: 8px 0 16px; }
#guess-form { display: flex; }
#guess-input { width: 100%; padding: 16px 20px; font-size: 18px; font-family: inherit; background: var(--bg-secondary); border: 2px solid var(--border-color); border-radius: 12px; color: var(--text-primary); outline: none; }
#guess-input:focus { border-color: var(--text-secondary); }
#guess-input::placeholder { color: var(--text-muted); }
.error-message { color: var(--red); font-size: 14px; margin-top: 8px; min-height: 20px; text-align: center; }
.results-container { flex: 1; overflow-y: auto; padding-bottom: 16px; }
.guesses-list { list-style: none; }
.guess-item { display: flex; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border-color); animation: slideIn 0.3s ease-out; }
@keyframes slideIn { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
.guess-rank { min-width: 70px; padding: 6px 12px; border-radius: 6px; font-size: 14px; font-weight: 600; text-align: center; margin-right: 12px; }
.guess-rank.green { background: var(--green-bg); color: var(--green); border: 2px solid var(--green); }
.guess-rank.yellow { background: var(--yellow-bg); color: var(--yellow); border: 2px solid var(--yellow); }
.guess-rank.red { background: var(--red-bg); color: var(--red); border: 2px solid var(--red); }
.guess-word { flex: 1; font-size: 16px; font-weight: 500; }
.guess-bar { width: 100px; height: 6px; background: var(--bg-tertiary); border-radius: 3px; overflow: hidden; margin-left: 12px; }
.guess-bar-fill { height: 100%; border-radius: 3px; }
.guess-bar-fill.green { background: var(--green); }
.guess-bar-fill.yellow { background: var(--yellow); }
.guess-bar-fill.red { background: var(--red); }
.hint-badge { font-size: 10px; padding: 2px 6px; background: var(--yellow-bg); color: var(--yellow); border-radius: 4px; margin-left: 8px; }
.win-message { text-align: center; padding: 32px 20px; background: var(--bg-secondary); border-radius: 16px; margin-bottom: 16px; border: 1px solid var(--green); }
.win-message.hidden { display: none; }
.win-icon { color: var(--green); margin-bottom: 16px; }
.win-message h2 { font-size: 24px; font-weight: 700; margin-bottom: 8px; color: var(--green); }
.win-word { font-size: 32px; font-weight: 800; color: var(--text-primary); margin-bottom: 8px; text-transform: uppercase; }
.win-stats { color: var(--text-secondary); font-size: 16px; margin-bottom: 20px; }
.win-stats strong { color: var(--text-primary); }
.win-actions { display: flex; gap: 12px; justify-content: center; }
.btn-primary { padding: 12px 24px; font-size: 16px; font-weight: 600; background: var(--green); color: #000; border: none; border-radius: 8px; cursor: pointer; }
.btn-primary:hover { opacity: 0.9; }
.action-buttons { display: flex; justify-content: center; gap: 16px; padding: 16px 0; border-top: 1px solid var(--border-color); }
.action-btn { display: flex; align-items: center; gap: 8px; padding: 10px 16px; font-size: 14px; background: transparent; color: var(--text-secondary); border: 1px solid var(--border-color); border-radius: 8px; cursor: pointer; }
.action-btn:hover { color: var(--text-primary); border-color: var(--text-secondary); }
.action-btn.danger:hover { color: var(--red); border-color: var(--red); }
.tip { text-align: center; padding: 16px; color: var(--text-muted); font-size: 13px; }
.modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; z-index: 1000; }
.modal.hidden { display: none; }
.modal-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.8); }
.modal-content { position: relative; background: var(--bg-secondary); border-radius: 16px; width: 90%; max-width: 420px; max-height: 80vh; overflow: hidden; }
.modal-small { max-width: 320px; text-align: center; padding: 32px 24px; }
.modal-close { position: absolute; top: 16px; right: 16px; width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; background: transparent; border: none; color: var(--text-secondary); font-size: 24px; cursor: pointer; }
.modal-close:hover { color: var(--text-primary); }
.modal-content h2 { padding: 24px 24px 0; font-size: 20px; font-weight: 700; }
.modal-body { padding: 16px 24px 24px; overflow-y: auto; max-height: 60vh; }
.modal-body p { color: var(--text-secondary); margin-bottom: 12px; }
.modal-actions { margin-top: 24px; }
.revealed-word { font-size: 28px; font-weight: 800; color: var(--text-primary); text-transform: uppercase; margin: 16px 0; }
.attempts-info { color: var(--text-secondary); font-size: 14px; }
.example { margin-top: 20px; background: var(--bg-tertiary); border-radius: 12px; padding: 16px; }
.example-row { display: flex; align-items: center; padding: 8px 0; }
.example-rank { min-width: 50px; padding: 4px 8px; border-radius: 4px; font-size: 12px; font-weight: 600; text-align: center; margin-right: 12px; }
.example-rank.green { background: var(--green-bg); color: var(--green); }
.example-rank.yellow { background: var(--yellow-bg); color: var(--yellow); }
.example-rank.red { background: var(--red-bg); color: var(--red); }
.example-word { flex: 1; font-size: 14px; color: var(--text-secondary); }
.example-bar { width: 80px; height: 4px; background: var(--bg-primary); border-radius: 2px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 2px; }
.bar-fill.green { background: var(--green); }
.bar-fill.yellow { background: var(--yellow); }
.bar-fill.red { background: var(--red); }
.levels-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.level-btn { aspect-ratio: 1; display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 600; background: var(--bg-tertiary); color: var(--text-primary); border: 2px solid transparent; border-radius: 8px; cursor: pointer; }
.level-btn:hover { border-color: var(--text-secondary); }
.level-btn.active { border-color: var(--green); background: var(--green-bg); }
.level-btn.locked { opacity: 0.4; cursor: not-allowed; }
.level-btn.completed { border-color: var(--green); background: var(--green-bg); color: var(--green); }

.hidden { display: none !important; }
.last-guess { background: var(--bg-secondary); border: 2px solid var(--yellow); border-radius: 12px; padding: 12px 16px; margin-bottom: 16px; }
.last-guess-content { display: flex; align-items: center; }
.last-guess.hidden { display: none; }
.last-guess .guess-rank { min-width: 70px; padding: 6px 12px; border-radius: 6px; font-size: 14px; font-weight: 600; text-align: center; margin-right: 12px; }
.last-guess .guess-word { flex: 1; font-size: 16px; font-weight: 500; }
.last-guess .guess-bar { width: 100px; height: 6px; background: var(--bg-tertiary); border-radius: 3px; overflow: hidden; margin-left: 12px; }
.last-guess .guess-bar-fill { height: 100%; border-radius: 3px; }
.last-guess-label { font-size: 11px; color: var(--text-muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 1px; display: block; }

/* ===== RESPONSIVE DESIGN ===== */

/* Desktop - large screens */
@media (min-width: 1024px) {
    .app { max-width: 600px; padding: 0 24px; }
    .logo { font-size: 28px; }
    #guess-input { padding: 18px 24px; font-size: 20px; }
    .guess-item { padding: 14px 0; }
    .guess-rank { min-width: 80px; padding: 8px 14px; font-size: 15px; }
    .guess-word { font-size: 18px; }
    .guess-bar { width: 120px; height: 8px; }
    .modal-content { max-width: 500px; }
    .levels-grid { grid-template-columns: repeat(6, 1fr); gap: 10px; }
    .level-btn { font-size: 18px; }
    .win-word { font-size: 36px; }
    .action-btn { padding: 12px 20px; font-size: 15px; }
    .last-guess { padding: 16px 20px; }
}

/* Tablet - medium screens */
@media (min-width: 768px) and (max-width: 1023px) {
    .app { max-width: 550px; }
    .logo { font-size: 26px; }
    #guess-input { padding: 16px 22px; font-size: 19px; }
    .guess-bar { width: 100px; }
    .levels-grid { grid-template-columns: repeat(5, 1fr); gap: 10px; }
    .modal-content { max-width: 450px; }
}

/* Mobile - small screens */
@media (max-width: 480px) {
    .app { padding: 0 12px; }
    .logo { font-size: 18px; letter-spacing: 1px; }
    .header { padding: 12px 0; }
    .header-left, .header-right { width: 40px; }
    .icon-btn { width: 36px; height: 36px; }
    .game-number { padding: 8px 0; font-size: 13px; }
    #guess-input { padding: 14px 16px; font-size: 16px; border-radius: 10px; }
    .input-container { padding: 6px 0 12px; }
    .guess-item { padding: 10px 0; }
    .guess-rank { min-width: 55px; padding: 5px 8px; font-size: 12px; margin-right: 8px; border-radius: 5px; }
    .guess-word { font-size: 14px; }
    .guess-bar { width: 50px; height: 5px; margin-left: 8px; }
    .hint-badge { font-size: 9px; padding: 2px 4px; margin-left: 4px; }
    .action-buttons { gap: 10px; padding: 12px 0; }
    .action-btn { padding: 8px 12px; font-size: 13px; gap: 6px; }
    .action-btn svg { width: 16px; height: 16px; }
    .tip { padding: 12px; font-size: 12px; }
    .levels-grid { grid-template-columns: repeat(5, 1fr); gap: 6px; }
    .level-btn { font-size: 14px; border-radius: 6px; }
    .modal-content { width: 95%; border-radius: 12px; }
    .modal-content h2 { padding: 20px 20px 0; font-size: 18px; }
    .modal-body { padding: 12px 20px 20px; }
    .modal-small { padding: 24px 20px; }
    .revealed-word { font-size: 24px; }
    .win-message { padding: 24px 16px; border-radius: 12px; }
    .win-message h2 { font-size: 20px; }
    .win-word { font-size: 26px; }
    .win-stats { font-size: 14px; }
    .btn-primary { padding: 10px 20px; font-size: 15px; }
    .last-guess { padding: 10px 12px; margin-bottom: 12px; border-radius: 10px; }
    .last-guess-label { font-size: 10px; margin-bottom: 6px; }
    .last-guess .guess-rank { min-width: 55px; padding: 5px 8px; font-size: 12px; }
    .last-guess .guess-word { font-size: 14px; }
    .last-guess .guess-bar { width: 50px; height: 5px; }
    .example { padding: 12px; }
    .example-rank { min-width: 40px; padding: 3px 6px; font-size: 11px; }
    .example-word { font-size: 13px; }
    .example-bar { width: 60px; }
}

/* Very small phones */
@media (max-width: 360px) {
    .logo { font-size: 16px; }
    .guess-rank { min-width: 50px; font-size: 11px; }
    .guess-word { font-size: 13px; }
    .guess-bar { width: 40px; }
    .levels-grid { grid-template-columns: repeat(4, 1fr); }
    .action-btn { padding: 8px 10px; font-size: 12px; }
    .action-btn span { display: none; }
}

/* Touch device improvements */
@media (hover: none) and (pointer: coarse) {
    .icon-btn { min-width: 44px; min-height: 44px; }
    .level-btn { min-height: 44px; }
    .action-btn { min-height: 44px; }
    .btn-primary { min-height: 48px; }
    .modal-close { min-width: 44px; min-height: 44px; }
}

/* Landscape mode on mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .app { min-height: auto; }
    .header { padding: 8px 0; }
    .results-container { max-height: 40vh; }
    .modal-content { max-height: 90vh; }
    .modal-body { max-height: 50vh; }
}

/* Safe area for notched phones */
@supports (padding: max(0px)) {
    .app { 
        padding-left: max(12px, env(safe-area-inset-left)); 
        padding-right: max(12px, env(safe-area-inset-right)); 
        padding-bottom: max(16px, env(safe-area-inset-bottom));
    }
}


/* Won and Failed level styles */
.level-btn.won { background: rgba(34, 197, 94, 0.2); border-color: #22c55e; color: #22c55e; }
.level-btn.failed { background: rgba(239, 68, 68, 0.2); border-color: #ef4444; color: #ef4444; }
.giveup-label { color: var(--text-secondary); font-size: 0.875rem; margin-bottom: 0.25rem; }