/* ===== MODERN KIRMIZI TEMA - AI TARİH OYUNU ===== */
:root {
    /* Kırmızı Renk Paleti */
    --primary-dark: #8B0000;
    --primary: #B71C1C;
    --primary-light: #D32F2F;
    --accent: #F44336;
    --accent-light: #FF6659;
    --accent-glow: #FF8A80;
    
    /* Nötr Renkler */
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #eeeeee;
    --gray-300: #e0e0e0;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    
    /* Durum Renkleri */
    --success: #2e7d32;
    --success-light: #4caf50;
    --warning: #ef6c00;
    --warning-light: #ff9800;
    
    /* Gradient'ler */
    --bg-gradient: linear-gradient(135deg, #8B0000 0%, #B71C1C 50%, #D32F2F 100%);
    --bg-gradient-light: linear-gradient(135deg, #B71C1C 0%, #D32F2F 50%, #F44336 100%);
    --card-gradient: linear-gradient(145deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.9) 100%);
    --button-gradient: linear-gradient(145deg, #D32F2F 0%, #F44336 100%);
    --button-hover: linear-gradient(145deg, #B71C1C 0%, #D32F2F 100%);
    
    /* Gölgeler */
    --shadow-soft: 0 4px 20px rgba(183, 28, 28, 0.15);
    --shadow-medium: 0 8px 30px rgba(183, 28, 28, 0.2);
    --shadow-strong: 0 12px 40px rgba(183, 28, 28, 0.3);
    --shadow-glow: 0 0 20px rgba(244, 67, 54, 0.4);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--gray-900);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
}

/* Arka plan dekorasyonu */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(244, 67, 54, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 102, 89, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 138, 128, 0.15) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 900px;
    width: 100%;
    background: var(--card-gradient);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    box-shadow: var(--shadow-strong);
    overflow: hidden;
    position: relative;
    min-height: 600px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: containerFadeIn 0.8s ease-out;
}

@keyframes containerFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ===== API MODAL ===== */
#api-modal {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    z-index: 100;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 40px;
    text-align: center;
    animation: modalFadeIn 0.6s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
    }
    to {
        opacity: 1;
        backdrop-filter: blur(15px);
    }
}

#api-modal h2 {
    font-size: 2.5rem;
    background: var(--button-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    font-weight: 700;
}

.api-input-group {
    margin-top: 30px;
    width: 100%;
    max-width: 500px;
}

.api-input, .model-select {
    width: 100%;
    padding: 18px 20px;
    font-size: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 12px;
    margin-bottom: 15px;
    background: var(--white);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-soft);
}

.api-input:focus, .model-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(244, 67, 54, 0.1), var(--shadow-medium);
    transform: translateY(-2px);
}

/* ===== HEADER ===== */
.header {
    background: var(--bg-gradient-light);
    color: var(--white);
    padding: 30px 25px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
    position: relative;
    z-index: 1;
    animation: titleSlideIn 0.8s ease-out 0.2s both;
}

.header p {
    font-size: 1.1rem;
    opacity: 0.95;
    text-shadow: 0 1px 5px rgba(0,0,0,0.2);
    position: relative;
    z-index: 1;
    animation: titleSlideIn 0.8s ease-out 0.4s both;
}

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

/* ===== GAME CONTAINER ===== */
.game-container {
    padding: 30px;
    display: none;
    animation: gameContainerSlideIn 0.6s ease-out;
}

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

/* ===== GAME INFO ===== */
.game-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    background: var(--white);
    padding: 20px;
    border-radius: 16px;
    box-shadow: var(--shadow-soft);
    border-left: 5px solid var(--accent);
    animation: infoSlideIn 0.6s ease-out 0.2s both;
}

@keyframes infoSlideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.info-item {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-700);
}

.info-item span {
    color: var(--accent);
    font-weight: 700;
    font-size: 1.2rem;
}

/* ===== LOADING ===== */
.loading {
    display: none;
    text-align: center;
    padding: 40px 20px;
    animation: loadingFadeIn 0.5s ease-out;
}

@keyframes loadingFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
    box-shadow: var(--shadow-glow);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#loading-text {
    font-size: 1.2rem;
    color: var(--gray-700);
    font-weight: 500;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ===== QUESTION BOX ===== */
.question-box {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 25px;
    position: relative;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s ease;
    animation: questionBoxSlideIn 0.6s ease-out 0.4s both;
}

@keyframes questionBoxSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.question-box:hover {
    box-shadow: var(--shadow-medium);
    transform: translateY(-5px);
    border-color: var(--accent-light);
}

.unit-badge {
    background: var(--button-gradient);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
    display: inline-block;
    font-weight: 600;
    box-shadow: var(--shadow-soft);
    animation: badgeBounce 0.6s ease-out 0.6s both;
}

@keyframes badgeBounce {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(-10px);
    }
    50% {
        transform: scale(1.05) translateY(0);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.topic-title {
    color: var(--primary-dark);
    font-weight: 700;
    margin-bottom: 20px;
    font-size: 1.3rem;
    animation: topicFadeIn 0.6s ease-out 0.8s both;
}

@keyframes topicFadeIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.question-text {
    font-size: 1.3rem;
    line-height: 1.7;
    color: var(--gray-900);
    font-weight: 500;
    animation: questionTextFadeIn 0.6s ease-out 1s both;
}

@keyframes questionTextFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== TEXTAREA ===== */
textarea {
    width: 100%;
    height: 140px;
    padding: 20px;
    font-size: 1.1rem;
    border: 2px solid var(--gray-200);
    border-radius: 12px;
    resize: vertical;
    margin-bottom: 25px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--white);
    box-shadow: var(--shadow-soft);
    animation: textareaSlideIn 0.6s ease-out 1.2s both;
}

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

textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(244, 67, 54, 0.1), var(--shadow-medium);
    transform: translateY(-3px);
}

/* ===== BUTTONS ===== */
.btn {
    padding: 16px 32px;
    font-size: 1.1rem;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    animation: buttonSlideIn 0.6s ease-out 1.4s both;
}

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

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--button-gradient);
}

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

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

.btn-primary:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-success {
    background: linear-gradient(145deg, var(--success) 0%, var(--success-light) 100%);
    display: none;
}

.btn-success:hover {
    background: linear-gradient(145deg, #1b5e20 0%, var(--success) 100%);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.btn-start {
    background: var(--button-gradient);
    width: 100%;
    font-size: 1.2rem;
    padding: 18px;
    border-radius: 12px;
}

.btn-start:hover {
    background: var(--button-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

/* ===== RESULT BOX ===== */
.result-box {
    margin-top: 25px;
    padding: 25px;
    border-radius: 16px;
    display: none;
    background: var(--white);
    box-shadow: var(--shadow-soft);
    animation: resultFadeIn 0.6s ease-out;
}

@keyframes resultFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.score-badge {
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 15px;
    padding: 15px;
    border-radius: 12px;
    color: white;
    background: var(--button-gradient);
    box-shadow: var(--shadow-soft);
    animation: scoreBadgeBounce 0.6s ease-out;
}

@keyframes scoreBadgeBounce {
    0% {
        transform: scale(0.8);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.feedback-text {
    font-size: 1.1rem;
    line-height: 1.6;
    background: var(--gray-50);
    padding: 20px;
    border-radius: 12px;
    border-left: 5px solid var(--accent);
    color: var(--gray-800);
    animation: feedbackSlideIn 0.6s ease-out 0.2s both;
}

@keyframes feedbackSlideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== BUTTON GROUP ===== */
.game-container > div:has(> .btn) {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    animation: buttonGroupSlideIn 0.6s ease-out 1.6s both;
}

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

/* ===== END SCREEN ===== */
.end-screen {
    display: none;
    text-align: center;
    padding: 60px 40px;
    animation: endScreenFadeIn 0.8s ease-out;
}

@keyframes endScreenFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.end-screen h2 {
    background: var(--button-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    font-size: 2.5rem;
    font-weight: 700;
}

.end-screen p {
    font-size: 1.3rem;
    color: var(--gray-700);
    margin-bottom: 30px;
}

/* ===== API INFO ===== */
.api-info {
    font-size: 0.9rem;
    margin-top: 25px;
    color: var(--gray-700);
    max-width: 500px;
    line-height: 1.5;
    padding: 20px;
    background: var(--gray-50);
    border-radius: 12px;
    border-left: 4px solid var(--accent);
}

.api-info a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.api-info a:hover {
    color: var(--primary-dark);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .container {
        margin: 10px;
        border-radius: 20px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .game-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .game-container > div:has(> .btn) {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}