/* CSS Variables for Theme Colors */
:root {
    /* Primary Green Theme - Nature Quest Palette */
    --color-primary-start: #2d7a3f;
    --color-primary-mid: #45a049;
    --color-primary-light: #66bb6a;
    --color-primary-lighter: #7cb342;
    
    /* Sky Blue Secondary */
    --color-secondary-blue: #4da6ff;
    --color-secondary-blue-light: #80c1ff;
    --color-secondary-blue-dark: #1e88e5;
    
    /* Sunshine Yellow Accent */
    --color-accent-yellow: #ffd54f;
    --color-accent-yellow-light: #ffecb3;
    --color-accent-yellow-dark: #ffb300;
    
    /* Button Colors */
    --color-button-start: #45a049;
    --color-button-end: #2d7a3f;
    --color-button-hover-start: #7cb342;
    --color-button-hover-end: #45a049;
    
    /* Focus Colors */
    --color-focus: #45a049;
    --color-focus-shadow: rgba(69, 160, 73, 0.15);
    
    /* Success/Achievement Colors */
    --color-success: #7cb342;
    --color-success-light: #aed581;
    
    /* Text Colors */
    --color-text-white: #ffffff;
    --color-text-white-soft: rgba(255, 255, 255, 0.95);
    --color-text-dark: #1b5e20;
    --color-text-muted: #66bb6a;
    
    /* Border & Background */
    --color-border: #a5d6a7;
    --color-bg-input: #f5f9fc;
    --color-bg-card: rgba(255, 255, 255, 0.98);
    
    /* Error Colors */
    --color-error: #fc8181;
    --color-error-bg: #fff5f5;
    
    /* Shadow Values */
    --shadow-sm: 0 10px 20px rgba(45, 122, 63, 0.3);
    --shadow-md: 0 20px 40px rgba(45, 122, 63, 0.3);
    --shadow-lg: 0 25px 50px rgba(45, 122, 63, 0.4);
    --shadow-hover: 0 15px 30px rgba(124, 179, 66, 0.4);
    --shadow-blue: 0 10px 30px rgba(77, 166, 255, 0.3);
    --shadow-yellow: 0 5px 20px rgba(255, 213, 79, 0.4);
}

/* Shared Hero Section Styles */
.hero-section {
    background: linear-gradient(135deg, var(--color-primary-start) 0%, var(--color-primary-mid) 35%, var(--color-primary-light) 70%, var(--color-primary-lighter) 100%);
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(77, 166, 255, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(255, 213, 79, 0.15) 0%, transparent 45%),
        radial-gradient(circle at 50% 50%, rgba(124, 179, 66, 0.1) 0%, transparent 55%),
        radial-gradient(circle at 90% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 35%);
    pointer-events: none;
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    color: var(--color-text-white) !important;
    font-size: 2.5rem;
    font-weight: 800;
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.hero-section .lead {
    color: var(--color-text-white-soft) !important;
    font-size: 1.1rem;
    font-weight: 400;
}

/* Shared Card Styles */
.hero-section .card {
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-section .card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.hero-section .card-body {
    background: var(--color-bg-card);
    backdrop-filter: blur(10px);
}

/* Shared Button Styles */
.hero-section .btn-primary {
    background: linear-gradient(135deg, var(--color-button-start) 0%, var(--color-button-end) 100%);
    border: none;
    border-radius: 0.75rem;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.hero-section .btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    background: linear-gradient(135deg, var(--color-button-hover-start) 0%, var(--color-button-hover-end) 100%);
}

.hero-section .btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.hero-section .btn-primary:disabled {
    background: linear-gradient(135deg, #cbd5e0 0%, #a0aec0 100%);
    box-shadow: none;
    cursor: not-allowed;
}
/* Question-specific styles (Sky Blue) */
.question-card {
    border-left: 5px solid var(--color-secondary-blue);
    box-shadow: var(--shadow-blue);
}

.btn-question {
    background: linear-gradient(135deg, var(--color-secondary-blue) 0%, var(--color-secondary-blue-dark) 100%);
    border: none;
    border-radius: 0.75rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-blue);
}

.btn-question:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(77, 166, 255, 0.4);
    background: linear-gradient(135deg, var(--color-secondary-blue-light) 0%, var(--color-secondary-blue) 100%);
}

.btn-question:active:not(:disabled) {
    transform: translateY(0);
}

/* Photo-specific styles (Sunshine Yellow) */
.photo-card {
    border-left: 5px solid var(--color-accent-yellow);
    box-shadow: var(--shadow-yellow);
}

.btn-photo {
    background: linear-gradient(135deg, var(--color-accent-yellow) 0%, var(--color-accent-yellow-dark) 100%);
    border: none;
    border-radius: 0.75rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-dark);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-yellow);
}

.btn-photo:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 213, 79, 0.5);
    background: linear-gradient(135deg, var(--color-accent-yellow-light) 0%, var(--color-accent-yellow) 100%);
    color: var(--color-text-dark);
}

.btn-photo:active:not(:disabled) {
    transform: translateY(0);
}

/* Success state styles (Fresh Grass Green) */
.success-card {
    border-left: 5px solid var(--color-success);
    background: linear-gradient(135deg, var(--color-success-light) 0%, var(--color-success) 100%);
}

.badge-success {
    background: var(--color-success);
    color: var(--color-text-white);
}

/* Progress bar styles (Yellow to Green gradient) */
.progress-nature {
    background: var(--color-border);
    border-radius: 0.5rem;
    overflow: hidden;
}

.progress-bar-nature {
    background: linear-gradient(90deg, var(--color-accent-yellow) 0%, var(--color-success) 100%);
    transition: width 0.6s ease;
}


/* Animations */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.hero-icon {
    animation: float 3s ease-in-out infinite;
}

.hero-icon i {
    display: inline-block;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.spinning {
    display: inline-block;
    animation: spin 1s linear infinite;
}

/* Mobile optimizations */
@media (max-width: 576px) {
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .hero-section .lead {
        font-size: 1rem;
    }
    
    .hero-section .card {
        border-radius: 1.25rem;
        margin: 0 0.5rem;
    }
    
    .hero-section .card-body {
        padding: 1.5rem !important;
    }
    
    .hero-section .btn-primary {
        font-size: 1rem;
        padding: 0.875rem 1.5rem;
    }
}

@media (max-width: 375px) {
    .hero-section h1 {
        font-size: 1.75rem;
    }
}