/* ========================================
   CSS VARIABLES - Easy to customize colors
   ======================================== */
:root {
    /* Primary colors */
    --color-bg: #fff5f8;
    --color-bg-soft: #ffe4ec;
    --color-primary: #ff7eb3;
    --color-primary-dark: #e85a9c;
    --color-secondary: #ffb6c1;

    /* Text colors */
    --color-text: #5c4a5a;
    --color-text-light: #8b7a8b;
    --color-text-white: #ffffff;

    /* Accent colors */
    --color-success: #a8e6cf;
    --color-success-text: #2d6a4f;
    --color-error: #ffb4b4;
    --color-error-text: #9d4c4c;

    /* Shadows and effects */
    --shadow-soft: 0 4px 20px rgba(255, 126, 179, 0.2);
    --shadow-medium: 0 8px 30px rgba(255, 126, 179, 0.3);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;

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

/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ========================================
   SCREEN LAYOUT
   ======================================== */
.screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
    padding: var(--spacing-md);
}

.screen.active {
    opacity: 1;
    visibility: visible;
}

.content {
    max-width: 500px;
    width: 100%;
    text-align: center;
    position: relative;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
.title {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 0.8s ease;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.2s both;
}

/* ========================================
   PASSWORD SCREEN
   ======================================== */
.password-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.password-input {
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    border: 2px solid var(--color-bg-soft);
    border-radius: 50px;
    width: 100%;
    max-width: 280px;
    text-align: center;
    outline: none;
    transition: all 0.3s ease;
}

.password-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 126, 179, 0.2);
}

.password-error {
    color: #e85a5a;
    font-size: 0.95rem;
    margin-top: var(--spacing-sm);
    animation: shake 0.4s ease;
}

.password-error.hidden {
    display: none;
}

.final-title {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease;
}

.final-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.2s both;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 500;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-fast);
    animation: fadeInUp 0.8s ease 0.4s both;
}

.primary-btn {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-text-white);
    box-shadow: var(--shadow-soft);
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.primary-btn:active {
    transform: translateY(-1px);
}

.secondary-btn {
    background: var(--color-bg-soft);
    color: var(--color-primary-dark);
    box-shadow: var(--shadow-soft);
}

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

/* ========================================
   FLOATING HEARTS (Intro screen decoration)
   ======================================== */
.floating-hearts {
    position: absolute;
    top: -100px;
    left: 0;
    right: 0;
    pointer-events: none;
}

.heart {
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--color-secondary);
    transform: rotate(-45deg);
    animation: floatHeart 6s ease-in-out infinite;
    opacity: 0.6;
}

.heart::before,
.heart::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--color-secondary);
    border-radius: 50%;
}

.heart::before {
    top: -10px;
    left: 0;
}

.heart::after {
    top: 0;
    left: 10px;
}

.heart-1 {
    left: 15%;
    animation-delay: 0s;
}

.heart-2 {
    left: 50%;
    animation-delay: 2s;
    width: 15px;
    height: 15px;
}

.heart-2::before,
.heart-2::after {
    width: 15px;
    height: 15px;
}

.heart-2::before {
    top: -7.5px;
}

.heart-2::after {
    left: 7.5px;
}

.heart-3 {
    left: 80%;
    animation-delay: 4s;
    width: 12px;
    height: 12px;
}

.heart-3::before,
.heart-3::after {
    width: 12px;
    height: 12px;
}

.heart-3::before {
    top: -6px;
}

.heart-3::after {
    left: 6px;
}

/* ========================================
   PROGRESS BAR
   ======================================== */
.progress-container {
    margin-bottom: var(--spacing-xl);
}

.progress-label {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

.progress-bar {
    width: 100%;
    height: 12px;
    background-color: var(--color-bg-soft);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
    border-radius: 20px;
    transition: width var(--transition-medium);
}

.progress-text {
    font-size: 0.85rem;
    color: var(--color-primary-dark);
    margin-top: var(--spacing-xs);
    font-weight: 600;
}

/* ========================================
   QUIZ QUESTION
   ======================================== */
.question-container {
    animation: fadeIn 0.5s ease;
}

.question-text {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.option-btn {
    padding: 1rem 1.5rem;
    font-size: 1rem;
    background-color: white;
    border: 2px solid var(--color-bg-soft);
    border-radius: 16px;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-text);
}

.option-btn:hover {
    border-color: var(--color-primary);
    background-color: var(--color-bg-soft);
    transform: translateX(5px);
}

.option-btn.correct {
    border-color: var(--color-success);
    background-color: var(--color-success);
    color: var(--color-success-text);
}

.option-btn.wrong {
    border-color: var(--color-error);
    background-color: var(--color-error);
    color: var(--color-error-text);
    animation: shake 0.4s ease;
}

/* ========================================
   FEEDBACK MESSAGE
   ======================================== */
.feedback {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    border-radius: 20px;
    background-color: white;
    box-shadow: var(--shadow-soft);
    animation: fadeInUp 0.4s ease;
}

.feedback.hidden {
    display: none;
}

.feedback-text {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.feedback.success {
    border: 2px solid var(--color-success);
}

.feedback.error {
    border: 2px solid var(--color-error);
}

/* ========================================
   FINAL SCREEN BACKGROUND
   ======================================== */
#final {
    position: relative;
    background-color: var(--color-bg);
    overflow: hidden;
}

#final::before {
    content: '';
    position: fixed;
    top: 50%;
    left: 50%;
    width: 100vh;
    height: 100vw;
    background-image: url('photos/gercekdeniz.jpeg');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0.3;
    z-index: 0;
    transform: translate(-50%, -50%) rotate(-90deg);
}

/* Mobile: use portrait photo instead */
@media (max-width: 768px) {
    #final::before {
        width: 100vw;
        height: 100vh;
        background-image: url('photos/63BBC2B2-49EC-41E2-BEE6-FCF1DE764310_1_105_c.jpeg');
        transform: translate(-50%, -50%);
        opacity: 0.25;
    }
}

#final .content {
    position: relative;
    z-index: 1;
}

/* ========================================
   VALENTINE QUESTION SCREEN
   ======================================== */
.valentine-gif {
    width: 200px;
    max-width: 80%;
    border-radius: 15px;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.6s ease;
}

.valentine-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease;
    transition: font-size 0.5s ease;
}

.valentine-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.yes-btn {
    background: linear-gradient(135deg, #ff6b9d, #ff4081);
    color: white;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    transition: all 0.4s ease;
    box-shadow: 0 4px 15px rgba(255, 64, 129, 0.3);
}

.yes-btn:hover {
    box-shadow: 0 8px 25px rgba(255, 64, 129, 0.5);
}

.no-btn {
    background: var(--color-bg-soft);
    color: var(--color-text-light);
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    transition: all 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
    position: relative;
}

.no-btn:hover {
    background: #e0e0e0;
}

.no-btn.shrinking {
    animation: shrink 0.3s ease forwards;
}

.no-message {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-md);
    animation: fadeIn 0.3s ease;
}

.no-message.hidden {
    display: none;
}

@keyframes shrink {
    to {
        transform: scale(0.8);
        opacity: 0.7;
    }
}

/* ========================================
   FLAPPY DENIZ GAME
   ======================================== */
.game-container {
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.game-title {
    font-size: 1.8rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.game-subtitle {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.game-area {
    position: relative;
    width: 100%;
    height: 400px;
    background: linear-gradient(180deg, #87CEEB 0%, #E0F6FF 100%);
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-medium);
}

.deniz-character {
    position: absolute;
    width: 60px;
    height: 60px;
    left: 60px;
    top: 50%;
    background-image: url('photos/flappydeniz.png');
    background-size: cover;
    background-position: center;
    border-radius: 50%;
    transition: transform 0.1s ease;
    z-index: 10;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.pipe {
    position: absolute;
    width: 60px;
    background: linear-gradient(90deg, #ff9ec4, #ff7eb3);
    border: 3px solid #e85a9c;
    border-radius: 5px;
}

.pipe-top {
    top: 0;
    border-top: none;
    border-radius: 0 0 5px 5px;
}

.pipe-bottom {
    bottom: 0;
    border-bottom: none;
    border-radius: 5px 5px 0 0;
}

.score-display {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 2rem;
    font-weight: bold;
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    z-index: 20;
}

.start-message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.3rem;
    color: var(--color-text);
    background: rgba(255,255,255,0.9);
    padding: 1rem 2rem;
    border-radius: 15px;
    z-index: 20;
    animation: pulse 1.5s ease-in-out infinite;
}

.start-message.hidden {
    display: none;
}

.game-over {
    margin-top: var(--spacing-lg);
    animation: fadeInUp 0.5s ease;
}

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

.game-over-text {
    font-size: 1.5rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.game-over .btn {
    margin: 0.5rem;
}

/* ========================================
   GAME MENU
   ======================================== */
.menu-title {
    font-size: 2rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.menu-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.game-menu-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.game-menu-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    width: 100%;
    max-width: 280px;
    padding: 1.2rem 1.5rem;
    background: white;
    border: 2px solid var(--color-bg-soft);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.game-menu-btn:hover {
    border-color: var(--color-primary);
    transform: translateX(10px);
    box-shadow: var(--shadow-soft);
}

/* Back button for games */
.back-btn {
    position: absolute;
    top: 20px;
    left: 20px;
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 20px;
    color: var(--color-text);
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 50;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.back-btn:hover {
    background: white;
    transform: translateX(-3px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.game-icon {
    font-size: 2rem;
}

.game-name {
    font-size: 1.1rem;
    color: var(--color-text);
}

/* ========================================
   KALP YAKALA GAME
   ======================================== */
.heart-catch-area {
    position: relative;
    background: linear-gradient(180deg, #ffe4ec 0%, #fff5f8 100%);
}

.timer-display {
    position: absolute;
    top: 15px;
    left: 15px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-primary-dark);
    background: white;
    padding: 0.3rem 0.8rem;
    border-radius: 10px;
    z-index: 20;
}

.falling-heart {
    position: absolute;
    font-size: 2rem;
    cursor: pointer;
    user-select: none;
    transition: transform 0.1s ease;
    z-index: 10;
}

.falling-heart:hover {
    transform: scale(1.2);
}

.falling-heart.caught {
    animation: heartCaught 0.3s ease forwards;
}

@keyframes heartCaught {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.5); }
    100% { transform: scale(0); opacity: 0; }
}

/* ========================================
   DENIZ BULMACA GAME
   ======================================== */
.puzzle-area {
    width: 100%;
    max-width: 320px;
    margin: 0 auto var(--spacing-md);
}

.puzzle-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    background: var(--color-primary);
    padding: 4px;
    border-radius: 12px;
    aspect-ratio: 1;
}

.puzzle-piece {
    background-size: 300% 300%;
    border-radius: 8px;
    cursor: grab;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    aspect-ratio: 1;
    user-select: none;
    -webkit-user-drag: element;
}

.puzzle-piece:hover {
    transform: scale(0.95);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.puzzle-piece:active {
    cursor: grabbing;
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
    z-index: 10;
}

.puzzle-piece.empty {
    background: rgba(255,255,255,0.3);
    cursor: default;
}

.puzzle-controls {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.puzzle-complete {
    margin-top: var(--spacing-md);
    animation: fadeInUp 0.5s ease;
}

.puzzle-complete.hidden {
    display: none;
}

.puzzle-complete-text {
    font-size: 1.5rem;
    color: var(--color-primary-dark);
    font-weight: 600;
}

/* ========================================
   MINI HEART BURST (Correct answer)
   ======================================== */
.mini-heart-burst {
    position: fixed;
    font-size: 1.2rem;
    pointer-events: none;
    z-index: 1000;
    animation: heartBurst 0.8s ease-out forwards;
}

@keyframes heartBurst {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 1;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translate(calc(-50% + var(--tx)), calc(-50% + var(--ty))) scale(1);
        opacity: 0;
    }
}

/* ========================================
   HEARTS ANIMATION (Final screen)
   ======================================== */
.hearts-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 100;
}

.animated-heart {
    position: absolute;
    bottom: -50px;
    animation: riseHeart 4s ease-out forwards;
    opacity: 0;
}

.animated-heart::before {
    content: '💖';
    font-size: var(--heart-size, 24px);
}

/* ========================================
   EXTRA MESSAGE
   ======================================== */
.extra-message {
    margin-top: var(--spacing-xl);
    animation: fadeInUp 0.8s ease;
}

.extra-message.hidden {
    display: none;
}

.love-text {
    font-size: 1.4rem;
    color: var(--color-primary-dark);
    font-weight: 500;
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes floatHeart {
    0%, 100% {
        transform: rotate(-45deg) translateY(0);
    }
    50% {
        transform: rotate(-45deg) translateY(-30px);
    }
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    20%, 60% {
        transform: translateX(-5px);
    }
    40%, 80% {
        transform: translateX(5px);
    }
}

@keyframes riseHeart {
    0% {
        opacity: 1;
        transform: translateY(0) scale(0.5) rotate(0deg);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateY(-100vh) scale(1) rotate(15deg);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.hidden {
    display: none !important;
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

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

/* Tablets and larger phones */
@media (min-width: 480px) {
    .title {
        font-size: 2.2rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

    .final-title {
        font-size: 2rem;
    }

    .question-text {
        font-size: 1.5rem;
    }
}

/* Desktop */
@media (min-width: 768px) {
    .title {
        font-size: 2.5rem;
    }

    .final-title {
        font-size: 2.3rem;
    }

    .content {
        max-width: 600px;
    }

    .option-btn {
        padding: 1.2rem 2rem;
    }
}