:root {
    --grid-size: 20;
    --cell-size: 30px;
    --primary-color: #3498db;
    --hover-color: #2ecc71;
    --line-color: #2c3e50;
    --background-color: #ecf0f1;
    --grid-line-color: #e0e0e0;
    --start-point-color: #e74c3c;
    --text-color: #2c3e50;
    --panel-background: #ffffff;
    --button-hover: #2980b9;
    --line-thickness: 2px;
    --point-size: 8px;
    --connection-size: 4px;
    
    /* Yeni başlangıç noktası renkleri */
    --start-point-color-1: #e74c3c;  /* Kırmızı */
    --start-point-color-2: #2ecc71;  /* Yeşil */
    --start-point-color-3: #9b59b6;  /* Mor */
    --start-point-color-4: #f39c12;  /* Turuncu */
    --start-point-color-5: #1abc9c;  /* Turkuaz */
    --disabled-start-color: #ccc;  /* Pasif başlangıç noktası rengi */
}

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

body {
    font-family: 'Nunito', sans-serif;
    background-color: var(--background-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 20px;
    color: var(--text-color);
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
    :root {
        --cell-size: 25px; /* Küçük grid hücreleri */
        --grid-size: 20;
        --point-size: 6px; /* Küçük noktalar */
        --connection-size: 3px;
    }
    
    body {
        padding: 10px;
        min-height: 100vh;
        height: 100vh;
        overflow-x: hidden;
    }
}

/* Touch Device Styles */
.touch-device .grid-point {
    /* Touch devices için daha büyük tıklama alanı */
    min-width: 44px;
    min-height: 44px;
    cursor: pointer;
}

.touch-device .grid-point::before {
    /* Touch devices için daha büyük görsel nokta */
    width: 12px;
    height: 12px;
}

.touch-device .grid-line {
    /* Touch devices için daha kalın çizgiler */
    --line-thickness: 4px;
}

/* Tablet Mode Styles */
.tablet-mode .grid-container {
    /* Tablet modunda grid container'ı daha büyük yap */
    max-width: 100%;
    margin: 0 auto;
}

.tablet-mode .highlight-points {
    /* Tablet modunda highlight efektini daha belirgin yap */
    background-color: rgba(46, 204, 113, 0.3) !important;
    border: 2px solid var(--hover-color) !important;
    transform: scale(1.2);
    transition: all 0.2s ease;
}

#instructions-panel {
 
    min-height: 172px !important;
    }
  

.container {
   
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

header {
    text-align: center;
  
}

h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
}

.game-area {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 20px;
    padding: 20px;
    position: relative;
}

@media (max-width: 768px) {
    .game-area {
        padding: 10px;
        gap: 15px;
        height: 100%;
        min-height: calc(100vh - 20px);
    }
}

.main-section {
    display: flex;
    gap: 20px;
    align-items: stretch; /* iki kolon aynı yükseklikte olsun */
}

@media (max-width: 768px) {
    .main-section {
        flex-direction: column;
        gap: 15px;
    }
}

.side-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
}

#grid-container {
    position: relative;
    width: calc(var(--cell-size) * var(--grid-size));
    height: calc(var(--cell-size) * var(--grid-size));
    background-color: white;
    border-right: 1px solid #ddd;
    border-bottom: 1px solid #ddd;
   
    background-image: linear-gradient(var(--grid-line-color) 1px, transparent 1px),
                      linear-gradient(90deg, var(--grid-line-color) 1px, transparent 1px);
    background-size: var(--cell-size) var(--cell-size);
    overflow: visible;
}

.grid-container-outer {

padding: 20px 24px;
background: white;
border-radius: 12px;
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

    @media (max-width: 768px) {
    .grid-container-outer {
        padding: 15px;
        margin-bottom: 10px;
        overflow-x: auto;
        max-width: 100%;
    }
    
    /* Mobile için büyük dokunmatik butonlar */
    .control-btn {
        min-height: 48px !important;
        padding: 14px 18px !important;
        font-size: 1rem !important;
        border-radius: 8px !important;
        min-width: 48px;
    }
    
    .btn-group {
        gap: 12px !important;
        flex-wrap: wrap;
    }
    
    .grid-controls {
        padding: 15px 0 !important;
    }
    
    .size-inputs {
        gap: 12px !important;
    }
    
    /* Instructions panel mobile optimization */
    #instructions-panel {
        padding: 15px !important;
        min-height: 150px !important;
    }
    
    .side-panel {
        width: 100% !important;
        min-width: unset !important;
    }
    
    .title {
        font-size: 1.1rem !important;
        margin-bottom: 15px !important;
    }
    
    /* Modal mobile optimization */
    .yk-modal-dialog {
        width: calc(100vw - 20px) !important;
        margin: 10px auto !important;
        max-height: calc(100vh - 20px) !important;
    }
    
    .yk-modal-body {
        padding: 15px !important;
    }
    
    .yk-modal-header {
        padding: 15px !important;
    }
    
    .yk-modal-footer {
        padding: 15px !important;
        flex-direction: column !important;
        gap: 8px !important;
    }
    
    .yk-modal-footer .control-btn {
        width: 100% !important;
        justify-content: center !important;
    }
    
    /* Top progress bar mobile optimization */
    .top-progress {
        padding: 12px 8px !important;
        gap: 8px !important;
        border-radius: 12px !important;
    }
    
    .top-progress .dot {
        width: 40px !important;
        height: 40px !important;
        font-size: 13px !important;
        border-radius: 12px !important;
    }
    
    .top-progress .dot:hover {
        transform: translateY(-2px) scale(1.02) !important;
    }
    
    .top-progress .dot.current {
        transform: scale(1.05) !important;
    }
    
    .top-progress .dot i {
        font-size: 13px !important;
    }
}

/* Modern topbar styles for all devices */
.top-progress {
    padding: 16px 12px !important;
    gap: 12px !important;
    flex-wrap: wrap !important;
    justify-content: center !important;
    border-radius: 16px !important;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%) !important;
    box-shadow: 
        0 8px 32px rgba(2, 6, 23, 0.08),
        0 4px 16px rgba(2, 6, 23, 0.04) !important;
    border: 2px solid #f1f5f9 !important;
    position: relative !important;
    overflow: hidden !important;
}

.top-progress::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.02), rgba(139, 92, 246, 0.02));
    z-index: 1;
}

.top-progress .dot {
    width: 48px !important;
    height: 48px !important;
    font-size: 16px !important;
    border-width: 2px !important;
    border-radius: 16px !important;
    font-weight: 800 !important;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
    position: relative !important;
    overflow: hidden !important;
    z-index: 2 !important;
    background: #ffffff !important;
    color: #0f172a !important;
    border-color: #e5e7eb !important;
    box-shadow: 0 2px 8px rgba(2, 6, 23, 0.04) !important;
}

.top-progress .dot::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.05), rgba(255, 167, 38, 0.05));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.top-progress .dot:hover::before {
    opacity: 1;
}

.top-progress .dot:hover {
    transform: translateY(-4px) scale(1.05) !important;
    box-shadow: 0 12px 24px rgba(255, 107, 107, 0.15) !important;
    border-color: rgba(255, 107, 107, 0.4) !important;
}

.top-progress .dot.done {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), #ffffff) !important;
    border-color: rgba(34, 197, 94, 0.4) !important;
    color: #059669 !important;
    box-shadow: 0 4px 16px rgba(34, 197, 94, 0.15) !important;
}

.top-progress .dot.done:hover {
    transform: translateY(-4px) scale(1.05) !important;
    box-shadow: 0 12px 24px rgba(34, 197, 94, 0.25) !important;
    border-color: rgba(34, 197, 94, 0.6) !important;
}

.top-progress .dot.current {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), #ffffff) !important;
    border-color: rgba(99, 102, 241, 0.5) !important;
    color: #4f46e5 !important;
    box-shadow: 
        0 0 0 3px rgba(99, 102, 241, 0.15),
        0 8px 20px rgba(99, 102, 241, 0.2) !important;
    transform: scale(1.1) !important;
}

.top-progress .dot.locked {
    background: #f8fafc !important;
    color: #94a3b8 !important;
    border-color: #e5e7eb !important;
    cursor: not-allowed !important;
    opacity: 0.7 !important;
}

.top-progress .dot.locked:hover {
    transform: none !important;
    box-shadow: 0 2px 8px rgba(2, 6, 23, 0.04) !important;
}

.top-progress .dot i {
    font-size: 16px !important;
    z-index: 2 !important;
    position: relative !important;
}

/* Tablet responsive styles */
@media (min-width: 769px) and (max-width: 1024px) {
    :root {
        --cell-size: 28px;
        --point-size: 7px;
    }
    
    .game-area {
        padding: 15px;
    }
    
    .grid-container-outer {
        padding: 18px;
    }
    
    .control-btn {
        min-height: 44px !important;
        padding: 12px 16px !important;
    }
    
    .top-progress .dot {
        width: 44px !important;
        height: 44px !important;
        font-size: 15px !important;
    }
}

.grid-point {
    position: absolute;
    width: calc(var(--point-size) * 1.5);
    height: calc(var(--point-size) * 1.5);
    background-color: transparent;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: all 0.2s;
}

.grid-point[data-is-start="true"] {
    width: calc(var(--point-size) * 2);
    height: calc(var(--point-size) * 2);
    border: 2px solid currentColor;
}

.grid-point.start-point {
    cursor: pointer;
    border: 2px solid;
    z-index: 10;
    position: absolute;
}

.grid-point.disabled-start {
    opacity: 0.6;
    cursor: pointer;
    background-color: var(--disabled-start-color) !important;
    border-color: var(--disabled-start-color) !important;
}

.grid-point.disabled-start:hover {
    background-color: var(--disabled-start-color) !important;
    transform: none !important;
    opacity: 0.8;
}

.grid-point:hover {
    background-color: var(--hover-color);
}

/* Start point'lerin hover efektini devre dışı bırak */
.grid-point.start-point:hover {
    background-color: inherit !important;
}

.grid-line {
    position: absolute;
    background-color: var(--line-color);
    transition: all 0.2s;
    pointer-events: none;
    height: var(--line-thickness);
}

.grid-line.horizontal {
    width: var(--cell-size);
}

.grid-line.vertical {
    width: var(--line-thickness);
    height: var(--cell-size);
}

.grid-line.diagonal {
    width: calc(var(--cell-size) * 1.414214);
}

.connection-point {
    position: absolute;
    width: var(--connection-size);
    height: var(--connection-size);
    background-color: var(--line-color);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 2;
}

.preview-line {
    background-color: var(--hover-color);
    opacity: 0.4;
    z-index: 1;
}

#instructions-panel {
    width: 100%;
    padding: 20px 24px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);

}

/* Panel başlıkları için modern, kompakt stil */
.title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-color);
    letter-spacing: 0.3px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.title::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15);
}

.grid-controls {
    background-color: white;
    padding: 16px;
    border-radius: 8px;
   
}

.grid-controls h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
    font-size: 1.2rem;
}

.size-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 10px;
    align-items: end;
}

.input-group {
    width: 100%;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 600;
}

.number-input {
    display: flex;
    align-items: stretch;
    border: 1px solid var(--grid-line-color);
    border-radius: 4px;
    overflow: hidden;
}

.number-input input {
    flex: 1;
    padding: 10px;
    border: none;
    font-family: 'Nunito', sans-serif;
    font-size: 1rem;
    text-align: center;
}

/* Tarayıcıların default number spinnerlarını gizle */
/* Chrome, Safari, Edge, Opera */
.number-input input[type=number]::-webkit-outer-spin-button,
.number-input input[type=number]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
/* Firefox */
.number-input input[type=number] {
    appearance: textfield;
    -moz-appearance: textfield;
}

.number-input input:focus {
    outline: none;
    box-shadow: inset 0 0 0 2px var(--primary-color);
}

.number-controls {
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--grid-line-color);
}

.number-controls button {
    border: none;
    background: white;
    padding: 4px 8px;
    cursor: pointer;
    color: var(--text-color);
    transition: all 0.2s;
}

.number-controls button:hover {
    background-color: var(--hover-color);
    color: white;
}

.number-controls button:first-child {
    border-bottom: 1px solid var(--grid-line-color);
}

#update-grid-btn {
    width: auto;
    padding: 12px 16px;
    margin-top: 0;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-family: 'Nunito', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

#update-grid-btn:hover {
    background-color: var(--button-hover);
    transform: translateY(-2px);
}

#instructions-panel h2 {
    color: var(--text-color);
    margin-bottom: 30px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
}

#instructions-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.instruction-group {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 5px;
    display: grid;
    grid-template-columns: 40px 1fr;
    column-gap: 12px;
    position: relative;
}

.instruction-group-title {
    grid-column: 1 / 2;
    grid-row: 1 / -1; /* tüm satırları kapsasın */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 6px;
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.85rem;
    color: white;
    margin: 0;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    width: 40px;
    position: absolute;
    left: 0px;
top: 0px;
bottom: 0px;
}

.instruction-steps {
    grid-column: 2 / -1;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
    padding-left: 5px;
  
}

.instruction-step {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    padding: 6px 12px;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-width: 45px;
    height: 45px;
    position: relative;
    justify-content: center;
    margin-top: 18px;
}

.instruction-step:hover {
    background: #f8f9fa;
}

.instruction-step.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.instruction-step .count {
    font-size: 0.9rem;
    position: absolute;
top: -20px;
font-weight: 800;
background-color: #ffbf03;
width: 109%;
text-align: center;
border-radius: 6px 6px 0 0;
padding: 0px 10px 0px 10px;
color: #fff;
z-index: 0;
left: -2px;

border-bottom: 0;
}


.instruction-step i {
    font-size: 1.4rem;
}

.control-buttons {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
    padding: 20px;
    border-radius: 16px;
    box-shadow: 
        0 4px 6px rgba(0, 0, 0, 0.05),
        0 1px 3px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(226, 232, 240, 0.8);
    margin-top: auto; /* yan panelin en altına it */
    backdrop-filter: blur(10px);
}

.btn-group {
    display: contents; /* içindeki butonlar ebeveyn grid'e dağılır */
}

.control-buttons .control-btn {
    height: 48px;
    padding: 12px 16px;
    font-size: 0.9rem;
    border-radius: 12px;
    font-weight: 700;
    letter-spacing: 0.3px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(226, 232, 240, 0.6);
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    color: #475569;
    box-shadow: 
        0 1px 3px rgba(0, 0, 0, 0.1),
        0 1px 2px rgba(0, 0, 0, 0.06);
}



/* Yan paneldeki iki büyük buton yan yana gelsin */
.control-buttons #new-start-btn,
.control-buttons #reset-btn {
    width: 100%;
}

.control-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 12px;
    border: none;
    border-radius: 6px;
    font-family: 'Nunito', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
}

.control-btn:hover {
    background: linear-gradient(135deg, #5457ee 0%, #4338ca 100%);
    color: #ffffff;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35),
    0 4px 10px rgba(0, 0, 0, 0.1);
}

.control-btn.primary-btn {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: #ffffff;
 
    display: block;
    text-decoration: none;
    flex: none;
    border: none;
    box-shadow: 
        0 4px 14px rgba(99, 102, 241, 0.25),
        0 1px 3px rgba(0, 0, 0, 0.1);
}
.control-btn.primary-btn:hover {
    background: linear-gradient(135deg, #5457ee 0%, #4338ca 100%);
    color: #ffffff;
    box-shadow: 
        0 8px 20px rgba(99, 102, 241, 0.35),
        0 4px 10px rgba(0, 0, 0, 0.1);
}
.control-btn.accent-btn {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    border: none;
    box-shadow: 
        0 4px 14px rgba(16, 185, 129, 0.25),
        0 1px 3px rgba(0, 0, 0, 0.1);
}

.control-btn.accent-btn:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    color: #ffffff;
    box-shadow: 
        0 8px 20px rgba(16, 185, 129, 0.35),
        0 4px 10px rgba(0, 0, 0, 0.1);
}

.control-btn.danger-btn {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #ffffff;
    border: none;
    box-shadow: 
        0 4px 14px rgba(239, 68, 68, 0.25),
        0 1px 3px rgba(0, 0, 0, 0.1);
}

.control-btn.danger-btn:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    color: #ffffff;
    box-shadow: 
        0 8px 20px rgba(239, 68, 68, 0.35),
        0 4px 10px rgba(0, 0, 0, 0.1);
}

.control-btn:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.control-btn {
    flex: 1;
    padding: 12px 16px;
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: 'Nunito', sans-serif;
    font-weight: 700;
    letter-spacing: 0.3px;
    box-shadow: 
        0 4px 14px rgba(99, 102, 241, 0.25),
        0 1px 3px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

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

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

.control-btn i {
    font-size: 0.95rem;
}

#reset-btn {
    background-color: #e74c3c;
}

#reset-btn:hover {
    background-color: #c0392b;
}

.control-btn:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
    transform: none;
}

#new-start-btn {
    background-color: #9b59b6;
}

#new-start-btn:hover {
    background-color: #8e44ad;
}

#new-start-btn.active {
    background-color: #8e44ad;
    transform: translateY(0);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.grid-point.highlight-points {
    background-color: var(--hover-color);
    width: calc(var(--point-size) * 1.5);
    height: calc(var(--point-size) * 1.5);
}

.grid-point.highlight-points:hover {
    background-color: var(--hover-color);
    width: calc(var(--point-size) * 1.5);
    height: calc(var(--point-size) * 1.5);
}

/* Tablet Mode: Larger highlight points */
body.tablet-mode .grid-point.highlight-points {
    background-color: var(--hover-color);
    width: calc(var(--point-size) * 1.5);
    height: calc(var(--point-size) * 1.5);
}