/* ============================================
   TIC-TAC-TOE — Nur Kartları Tasarım Dili
   Ana Site Design System Uyarlanmış
   ============================================ */

/* --------------------------------------------
   1. ROOT VARIABLES
   -------------------------------------------- */

:root {
    --primary-color: #A06872;
    --primary-dark: #8E5A65;
    --primary-light: #CC8E98;

    --secondary-color: #FDF5E6;
    --accent-color: #9E7F7F;
    --accent-warm: #E6C9C9;

    --bg-color: #FFF9F9;
    --bg-secondary: #FFF0F5;
    --card-bg: #FFFFFF;

    --text-primary: #4E342E;
    --text-secondary: #8D6E63;
    --text-muted: #A89080;

    --border-color: #F0E6E6;
    --divider: #F5E8E8;

    --shadow-sm: 0 2px 8px rgba(183, 110, 121, 0.1);
    --shadow-md: 0 4px 15px rgba(183, 110, 121, 0.15);
    --shadow-lg: 0 8px 25px rgba(183, 110, 121, 0.2);

    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 20px;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

/* --------------------------------------------
   2. BASE RESET
   -------------------------------------------- */

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

body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-color);
    background-image: radial-gradient(
        circle at 50% 0%,
        var(--bg-secondary) 0%,
        var(--bg-color) 55%
    );
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

/* --------------------------------------------
   3. PANEL
   -------------------------------------------- */

#tic-tac-toe {
    width: 100%;
    max-width: 430px;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

/* Panel başlığı — markup'a dokunmadan, sadece CSS ile */
#tic-tac-toe::before {
    content: 'Tic-Tac-Toe';
    width: 100%;
    text-align: center;
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.6rem, 5vw, 2rem);
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.5px;
    line-height: 1.25;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--divider);
}

/* --------------------------------------------
   4. STATUS
   -------------------------------------------- */

#status {
    font-family: 'Playfair Display', serif;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.2px;
    color: var(--primary-color);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    padding: 8px 24px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: background var(--transition-base), border-color var(--transition-base);
}

/* --------------------------------------------
   5. BOARD
   -------------------------------------------- */

#board {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.board-row {
    display: flex;
    gap: 10px;
}

.square {
    width: clamp(72px, 22vw, 92px);
    height: clamp(72px, 22vw, 92px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.8rem, 6vw, 2.4rem);
    font-weight: 700;
    color: var(--primary-color);
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    -webkit-appearance: none;
    appearance: none;
}

/* Boş kareler: hover'da kartlar gibi havalanır */
.square:empty:hover {
    transform: translateY(-4px);
    border-color: var(--primary-light);
    background: var(--bg-secondary);
    box-shadow: var(--shadow-md);
}

.square:empty:active {
    transform: translateY(-1px);
}

/* Dolu kareler: sabit, hafif tonlu zemin */
.square:not(:empty) {
    cursor: default;
    background: var(--bg-secondary);
    border-color: var(--primary-light);
    animation: markIn 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.square:focus-visible {
    outline: 3px solid var(--primary-light);
    outline-offset: 3px;
}

@keyframes markIn {
    from {
        opacity: 0;
        transform: scale(0.62);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* --------------------------------------------
   6. RESET BUTTON
   -------------------------------------------- */

#reset {
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    padding: 12px 34px;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--primary-color);
    cursor: pointer;
    transition: all var(--transition-base);
}

#reset:hover {
    background: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

#reset:active {
    transform: translateY(0);
}

#reset:focus-visible {
    outline: 3px solid var(--primary-light);
    outline-offset: 3px;
}

/* --------------------------------------------
   7. RESPONSIVE
   -------------------------------------------- */

@media (max-width: 390px) {
    #tic-tac-toe {
        padding: var(--spacing-md) var(--spacing-sm) var(--spacing-sm);
    }

    #board,
    .board-row {
        gap: 8px;
    }

    .square {
        width: 66px;
        height: 66px;
        font-size: 1.6rem;
    }

    #status {
        font-size: 0.9rem;
        padding: 7px 18px;
    }
}

/* --------------------------------------------
   8. REDUCED MOTION
   -------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
    .square,
    #reset,
    #status {
        transition: none;
    }

    .square:empty:hover,
    #reset:hover {
        transform: none;
    }

    .square:not(:empty) {
        animation: none;
    }
}

/* ============================================
   COPYRIGHT STILI (Opsiyonel)
   ============================================ */

#copyright-year {
  font-weight: 600;
  color: var(--primary-color, #A06872);
}

.site-footer .copyright-line {
  text-align: center;
  padding: 24px 16px;
  border-top: 1px solid var(--border-color, #F0E6E6);
  color: var(--text-muted, #A89080);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0 0 8px 0;
}