/* ====================
   General Reset & Base
==================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    text-align: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #3a1c71, #d76d77, #ffaf7b);
    height: 100vh;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: 2rem;
    transition: background-color 0.3s ease;
}

/* ====================
         Typography
==================== */
h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px #000000aa;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    text-shadow: 1px 1px 3px #00000088;
}

/* ====================
         Buttons
==================== */
.btn-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.line-one,
.line-two {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.btn {
    height: 150px;
    width: 150px;
    border-radius: 20%;
    border: 5px solid white;
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: bold;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.1s ease, box-shadow 0.2s ease;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
    user-select: none;
}

/* === Button Colors === */
.red { background-color: #d95980; box-shadow: 0 0 15px #d95980aa; }
.red:hover { box-shadow: 0 0 25px #d95980ff; transform: scale(1.05); }

.yellow { background-color: #f99b45; box-shadow: 0 0 15px #f99b45aa; }
.yellow:hover { box-shadow: 0 0 25px #f99b45ff; transform: scale(1.05); }

.green { background-color: #63aac0; box-shadow: 0 0 15px #63aac0aa; }
.green:hover { box-shadow: 0 0 25px #63aac0ff; transform: scale(1.05); }

.purple { background-color: #819ff9; box-shadow: 0 0 15px #819ff9aa; }
.purple:hover { box-shadow: 0 0 25px #819ff9ff; transform: scale(1.05); }

/* === Flash & Game Over === */
.flash {
    background-color: #fff !important;
    box-shadow: 0 0 30px #fff;
    color: black;
    transform: scale(1.1);
}

body.game-over {
    background-color: #ff4b5c !important;
    transition: background-color 0.2s ease;
}

/* ====================
        Scoreboard
==================== */
.scores {
    margin-bottom: 2rem;
    font-size: 1.2rem;
    color: #fff;
}

#score, #highscore {
    font-weight: bold;
}

/* Restart Button */
#restart {
    margin-top: 1rem;
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
    font-weight: bold;
    border: none;
    border-radius: 12px;
    background-color: #00bcd4;
    color: white;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 188, 212, 0.4);
    transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
#restart:hover {
    background-color: #00acc1;
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 172, 193, 0.6);
}
#restart:active {
    transform: scale(0.97);
    box-shadow: 0 2px 10px rgba(0, 172, 193, 0.3);
}

/* ====================
        Popups
==================== */
#popup-overlay {
    position: fixed;
    top: 0; left: 0;
    height: 100%; width: 100%;
    background: rgba(0, 0, 0, 0.75);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
}

#popup {
    background: #fff;
    color: #333;
    border-radius: 12px;
    padding: 2rem;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    position: relative;
    animation: pop-in 0.3s ease;
}

#popup h2 {
    margin-bottom: 1rem;
    text-align: center;
    font-size: 1.5rem;
}

#popup ul {
    text-align: left;
    margin-bottom: 1rem;
}
#popup li {
    margin-bottom: 0.5rem;
    font-size: 1rem;
}
#popup p {
    text-align: center;
    font-weight: bold;
}

#close-popup {
    position: absolute;
    top: 0.8rem;
    right: 1rem;
    font-size: 1.3rem;
    cursor: pointer;
    color: #ff4b5c;
    font-weight: bold;
    transition: transform 0.2s ease;
}
#close-popup:hover {
    transform: scale(1.2);
}

@keyframes pop-in {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* ====================
    Game Over Modal
==================== */
#game-over-popup {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

#game-over-popup.hidden {
    display: none;
}

.popup-inner {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem 3rem;
    border-radius: 14px;
    text-align: center;
    box-shadow: 0 0 25px rgba(255, 71, 87, 0.6);
    animation: pop-in 0.3s ease;
    max-width: 90%;
    color: #000;
}

.popup-inner h2 {
    font-size: 2rem;
    color: #ff1744;
    margin-bottom: 1rem;
}

.popup-inner p {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.popup-inner button,
#play-again {
  padding: 0.7rem 1.5rem;
  font-size: 1rem;
  font-weight: bold;
  border: none;
  border-radius: 8px;
  background: #ff1744;
  color: #fff;
  cursor: pointer;
  transition: all 0.2s ease;
}
#play-again:hover {
  background: #d50000;
  transform: scale(1.05);
}

/* ====================
      Theme Toggle
==================== */
.top-controls {
    position: absolute;
    top: 10px;
    right: 20px;
    z-index: 100;
}

#toggle-theme {
    padding: 0.5rem 1rem;
    background-color: #ffffff88;
    border: none;
    border-radius: 10px;
    font-weight: bold;
    cursor: pointer;
    color: #000;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
}

/* ====================
      Light Mode
==================== */
body.light-mode {
   background: linear-gradient(135deg, #fae1dd, #fff1eb, #ace0f9, #f6f8fc);
    color: #000;

}

body.light-mode h1,
body.light-mode h2 {
    text-shadow: none;
    color: #000;
}

body.light-mode .btn {
    border: 5px solid black;
}

body.light-mode .scores,
body.light-mode #score,
body.light-mode #highscore {
    color: #000;
}

body.light-mode #popup,
body.light-mode #game-over-msg {
    background: rgba(255, 255, 255, 0.95);
    color: #000;
    border-color: #d32f2f;
    box-shadow: 0 0 12px rgba(0, 0, 0, 0.2);

}

body.light-mode #restart {
    color: #000;
    background: #ffffffaa;
}
body.light-mode #restart:hover {
    background: #ffffffcc;
}
body.light-mode #restart:active {
    background: #ffffff99;
}

body.light-mode #game-over-popup {
    background: rgba(255, 255, 255, 0.8);
}

body.light-mode #game-over-popup .popup-inner {
    background: #fff;
    color: #000;
}
@keyframes fade-in {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

.popup-inner {
  animation: fade-in 0.3s ease-in-out;
}
/* ====================
     Responsive Styles
==================== */
/* Add media queries here if needed */
/* ====================
   Responsive Styles
==================== */

/* Small tablets and large phones */
@media (max-width: 768px) {
    h1 {
        font-size: 2.2rem;
    }

    h2 {
        font-size: 1.2rem;
    }

    .btn {
        width: 100px;
        height: 100px;
        font-size: 1rem;
    }

    #restart {
        padding: 0.5rem 1rem;
        font-size: 1rem;
    }

    .popup-inner {
        padding: 1.5rem 1.5rem;
    }

    .popup-inner h2 {
        font-size: 1.5rem;
    }

    .popup-inner p {
        font-size: 1rem;
    }
}

/* Small phones */
@media (max-width: 480px) {
    body {
        padding-top: 1rem;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1rem;
    }

    .btn {
        width: 80px;
        height: 80px;
        font-size: 0.9rem;
    }

    .btn-container {
        gap: 0.8rem;
    }

    .line-one,
    .line-two {
        gap: 0.8rem;
    }

    .popup-inner {
        padding: 1rem;
    }

    .popup-inner h2 {
        font-size: 1.2rem;
    }

    .popup-inner p {
        font-size: 0.9rem;
    }

    #restart,
    .popup-inner button,
    #play-again {
        font-size: 0.9rem;
        padding: 0.5rem 1rem;
    }

    #toggle-theme {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
}