/* ==========================================================================
   HANOI - UI COMPONENT DESIGNS & STYLING (components.css)
   ========================================================================== */

/* Glassmorphic Decorative Card Pattern */
.glass-card {
    background: var(--surface-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: var(--shadow-premium);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: var(--transition-smooth);
}

.glass-card:hover {
    background: var(--surface-glass-hover);
    border-color: var(--border-glass-bright);
    transform: translateY(-4px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6), 0 0 20px rgba(255, 255, 255, 0.02);
}

/* Premium Component Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.6rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    gap: 8px;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--text-primary);
    box-shadow: 0 4px 15px rgba(212, 130, 59, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(212, 130, 59, 0.5), var(--shadow-glow);
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--border-glass-bright);
    transform: translateY(-2px);
}

/* Google Play Store Badge Button */
.btn-playstore {
    display: inline-flex;
    align-items: center;
    background: #000000;
    border: 1px solid var(--border-glass-bright);
    padding: 0.6rem 1.4rem;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: var(--transition-smooth);
    cursor: pointer;
    box-shadow: var(--shadow-premium);
    gap: 12px;
}

.btn-playstore:hover {
    transform: scale(1.03) translateY(-2px);
    border-color: var(--primary);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.8), 0 0 15px rgba(212, 130, 59, 0.2);
}

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

.playstore-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.1;
}

.playstore-text .sub {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-weight: 500;
}

.playstore-text .main {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

/* Interactive Self-Solving Hanoi Simulator Board */
.simulator-container {
    width: 100%;
    max-width: 460px;
    margin: 0 auto;
}

.simulator-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.sim-badge {
    background: var(--secondary-glow);
    border: 1px solid var(--border-glass);
    padding: 4px 10px;
    border-radius: var(--radius-round);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-light);
    display: flex;
    align-items: center;
    gap: 6px;
}

.sim-badge::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--success);
}

.moves-count {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.moves-count strong {
    color: var(--primary-light);
    font-size: 1.1rem;
}

.board-wrapper {
    position: relative;
    width: 100%;
    height: 220px;
    background: rgba(18, 14, 20, 0.4);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-sm) 0 var(--space-sm);
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: flex-end;
    overflow: hidden;
}

/* Wooden Base */
.board-base {
    position: absolute;
    bottom: 0;
    left: 2%;
    width: 96%;
    height: 20px;
    background: linear-gradient(to bottom, var(--secondary) 0%, #3e271a 100%);
    border-radius: 6px 6px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.4);
    z-index: 10;
}

/* Pegs layout */
.pegs-row {
    display: flex;
    justify-content: space-around;
    align-items: flex-end;
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 5;
    padding-bottom: 20px; /* offset base */
}

.peg-column {
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    justify-content: flex-start;
    width: 30%;
    height: 140px;
    position: relative;
    cursor: pointer;
}

/* Wooden Peg shafts */
.peg-shaft {
    position: absolute;
    bottom: 0;
    width: 10px;
    height: 100%;
    background: linear-gradient(to right, var(--secondary) 0%, #3e271a 100%);
    border-radius: var(--radius-round) var(--radius-round) 0 0;
    box-shadow: inset -1px 0 3px rgba(255,255,255,0.05);
}

.peg-label {
    position: absolute;
    top: -24px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
}

/* Dynamic Disk Styling */
.disk {
    height: 20px;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3), 0 1px 0 rgba(255, 255, 255, 0.1) inset;
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), bottom 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    z-index: 20;
    position: absolute;
    transform: translateX(-50%);
    left: 50%;
}

/* Disk gradient themes based on levels */
.disk-1 { width: 40px; background: linear-gradient(135deg, #06d6a0 0%, #00b4d8 100%); }
.disk-2 { width: 60px; background: linear-gradient(135deg, #ffb703 0%, #fb8500 100%); }
.disk-3 { width: 80px; background: linear-gradient(135deg, #ff006e 0%, #8338ec 100%); }
.disk-4 { width: 100px; background: linear-gradient(135deg, #3a86c8 0%, #00f2fe 100%); }
.disk-5 { width: 120px; background: linear-gradient(135deg, #e056fd 0%, #9b51e0 100%); }

/* Simulator Control Keys */
.simulator-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
}

.sim-btn {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.sim-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-glass-bright);
    color: var(--primary-light);
}

.sim-btn-large {
    width: auto;
    padding: 0 var(--space-sm);
    font-weight: 600;
    font-size: 0.85rem;
    gap: 6px;
}

/* Level details cards and insights */
.insight-card-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.insight-item {
    display: flex;
    gap: var(--space-sm);
    align-items: flex-start;
}

.insight-icon {
    width: 32px;
    height: 32px;
    background: var(--secondary-glow);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-weight: 700;
    flex-shrink: 0;
}

.insight-content h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.insight-content p {
    font-size: 0.9rem;
    line-height: 1.5;
}