/* Bananas.ai - Main Stylesheet */

:root {
    --banana: #FFE55C;
    --banana-dark: #F7C948;
    --banana-light: #FFF4A3;
    --leaf: #31B057;
    --leaf-dark: #228B45;
    --leaf-light: #4CAF6B;
    --ink: #2B2B2B;
    --ink-soft: #555;
    --ink-light: #777;
    --white: #ffffff;
    --cream: #FFF9E6;
    --shadow: 0 20px 60px rgba(0,0,0,0.15);
    --shadow-hover: 0 30px 80px rgba(0,0,0,0.25);
    --shadow-light: 0 8px 25px rgba(0,0,0,0.1);
    --radius: 20px;
    --radius-small: 10px;
    --gradient: linear-gradient(135deg, var(--banana), #fff9c4, var(--leaf));
    --gradient-reverse: linear-gradient(135deg, var(--leaf), #fff9c4, var(--banana));
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Base Styles */
* { 
    box-sizing: border-box; 
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--gradient);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    color: var(--ink);
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    line-height: 1.6;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 15px 0;
    box-shadow: var(--shadow-light);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    padding: 10px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    transition: var(--transition);
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--ink);
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 25px;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    background: var(--banana);
    transform: translateY(-2px);
}

.nav-link.active {
    background: var(--leaf);
    color: var(--white);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--ink);
}

/* Floating Background Elements */
.floating-bananas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.floating-banana {
    position: absolute;
    font-size: 2rem;
    animation: float 20s infinite linear;
    opacity: 0.1;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% { opacity: 0.1; }
    90% { opacity: 0.1; }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 120px 20px 80px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    margin: 20px 20px 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 300%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { left: -100%; }
    100% { left: 100%; }
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    margin: 0 0 20px 0;
    background: var(--gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: textGlow 3s ease-in-out infinite alternate;
    position: relative;
    z-index: 1;
}

@keyframes textGlow {
    from { filter: drop-shadow(0 0 20px rgba(255, 229, 92, 0.5)); }
    to { filter: drop-shadow(0 0 40px rgba(255, 229, 92, 0.8)); }
}

.hero p {
    font-size: 1.4rem;
    color: var(--ink-soft);
    margin: 20px 0 40px 0;
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

/* Enhanced button styles for page-specific overrides */
.btn {
    display: inline-block;
    padding: 16px 32px;
    margin: 5px;
    background: var(--white);
    border: 3px solid var(--ink);
    border-radius: 50px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    font-size: 1.1rem;
    color: var(--ink);
    box-shadow: var(--shadow-light);
    transform: translateZ(0);
    will-change: transform;
    font-family: inherit;
    user-select: none;
    line-height: 1.2;
    text-align: center;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--banana);
    transition: var(--transition);
    z-index: -1;
}

.btn:hover::before {
    left: 0;
}

.btn:hover {
    transform: translateY(-3px) translateZ(0);
    box-shadow: var(--shadow-hover);
    border-color: var(--banana-dark);
}

.btn:active {
    transform: translateY(-1px) translateZ(0);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn:disabled:hover {
    transform: none !important;
    box-shadow: var(--shadow-light);
}

.btn-primary {
    background: var(--leaf);
    color: var(--white);
    border-color: var(--leaf);
}

.btn-primary::before {
    background: var(--leaf-dark);
}

.btn-secondary {
    background: var(--banana);
    border-color: var(--banana-dark);
}

.btn-large {
    padding: 20px 40px;
    font-size: 1.3rem;
}

.btn-small {
    padding: 12px 24px;
    font-size: 0.95rem;
}

/* Enhanced form styles */
.form-input {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-small);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
    font-family: inherit;
    line-height: 1.4;
}

.form-input:focus {
    outline: none;
    border-color: var(--banana);
    box-shadow: 0 0 20px rgba(255, 229, 92, 0.3);
}

.form-input::placeholder {
    color: var(--ink-light);
    opacity: 0.7;
}

.form-input:invalid {
    border-color: #ff4757;
}

.form-input:valid {
    border-color: var(--leaf);
}

/* Enhanced card styles */
.card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border-top: 4px solid var(--gradient);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient);
}

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

.card h2 {
    font-size: 1.8rem;
    margin: 0 0 20px 0;
    color: var(--ink);
    line-height: 1.3;
}

.card h3 {
    font-size: 1.4rem;
    margin: 0 0 15px 0;
    color: var(--ink);
    line-height: 1.3;
}

.card p {
    color: var(--ink-soft);
    margin-bottom: 20px;
    line-height: 1.6;
}

/* Enhanced loading animation */
.loading {
    animation: pulse 1.5s ease-in-out infinite;
    font-style: italic;
    color: var(--ink-soft);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Enhanced message styles */
.message {
    background: var(--cream);
    padding: 15px;
    margin: 10px 0;
    border-radius: var(--radius-small);
    border-left: 4px solid var(--leaf);
    animation: slideIn 0.5s ease-out;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.message strong {
    color: var(--leaf);
}

/* Enhanced navigation styles */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 15px 0;
    box-shadow: var(--shadow-light);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    padding: 10px 0;
    box-shadow: var(--shadow);
}

.nav-link {
    text-decoration: none;
    color: var(--ink);
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 25px;
    transition: var(--transition);
    position: relative;
    display: block;
}

.nav-link:hover {
    background: var(--banana);
    transform: translateY(-2px);
}

.nav-link.active {
    background: var(--leaf);
    color: var(--white);
}

/* Enhanced grid system */
.grid {
    display: grid;
    gap: 30px;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Enhanced banana counter */
.banana-counter {
    position: fixed;
    top: 80px;
    right: 20px;
    background: rgba(255, 255, 255, 0.95);
    padding: 15px 25px;
    border-radius: 50px;
    box-shadow: var(--shadow);
    font-weight: 700;
    font-size: 1.2rem;
    backdrop-filter: blur(20px);
    z-index: 100;
    transition: var(--transition);
    user-select: none;
}

.banana-counter:hover {
    transform: scale(1.05);
}

/* Enhanced fact display */
.fact-display {
    background: var(--cream);
    padding: 25px;
    border-radius: var(--radius);
    margin: 20px 0;
    font-size: 1.1rem;
    line-height: 1.6;
    border-left: 5px solid var(--banana);
    position: relative;
    overflow: hidden;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fact-display::before {
    content: '💡';
    position: absolute;
    top: -10px;
    right: -10px;
    font-size: 3rem;
    opacity: 0.1;
}

/* Error handling styles */
.error-message {
    background: #ffe6e6;
    color: #d63031;
    padding: 15px;
    border-radius: var(--radius-small);
    border-left: 4px solid #d63031;
    margin: 10px 0;
}

.success-message {
    background: #e6f7e6;
    color: var(--leaf-dark);
    padding: 15px;
    border-radius: var(--radius-small);
    border-left: 4px solid var(--leaf);
    margin: 10px 0;
}

/* Enhanced responsive design */
@media (max-width: 768px) {
    .navbar {
        padding: 10px 0;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
        gap: 10px;
        border-radius: 0 0 var(--radius) var(--radius);
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero {
        margin: 10px;
        padding: 100px 20px 60px;
    }
    
    .btn {
        padding: 14px 24px;
        font-size: 1rem;
        margin: 5px;
    }

    .btn-large {
        padding: 16px 32px;
        font-size: 1.1rem;
    }

    .banana-counter {
        top: 70px;
        right: 10px;
        padding: 10px 15px;
        font-size: 1rem;
    }

    .grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    .card {
        padding: 20px;
    }

    .fact-display {
        padding: 20px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 80px 15px 50px;
    }

    .container {
        padding: 0 15px;
    }

    .card {
        padding: 20px;
        margin: 10px 0;
    }

    .section {
        padding: 40px 0;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.95rem;
    }

    .btn-large {
        padding: 15px 30px;
        font-size: 1rem;
    }
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 60px 0;
}

.grid {
    display: grid;
    gap: 30px;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Cards */
.card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient);
}

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

.card h2 {
    font-size: 1.8rem;
    margin: 0 0 20px 0;
    color: var(--ink);
}

.card h3 {
    font-size: 1.4rem;
    margin: 0 0 15px 0;
    color: var(--ink);
}

.card p {
    color: var(--ink-soft);
    margin-bottom: 20px;
}

/* Banana Counter */
.banana-counter {
    position: fixed;
    top: 80px;
    right: 20px;
    background: rgba(255, 255, 255, 0.95);
    padding: 15px 25px;
    border-radius: 50px;
    box-shadow: var(--shadow);
    font-weight: 700;
    font-size: 1.2rem;
    backdrop-filter: blur(20px);
    z-index: 100;
    transition: var(--transition);
}

.banana-counter:hover {
    transform: scale(1.05);
}

/* Banana Rain Animation */
.banana-rain {
    position: fixed;
    font-size: 3rem;
    pointer-events: none;
    z-index: 50;
    animation: bananaFall linear forwards;
    user-select: none;
}

@keyframes bananaFall {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(calc(100vh + 100px)) rotate(720deg);
        opacity: 0.7;
    }
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--ink);
}

.form-input {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-small);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--banana);
    box-shadow: 0 0 20px rgba(255, 229, 92, 0.3);
}

.form-input::placeholder {
    color: var(--ink-light);
}

/* Fact Display */
.fact-display {
    background: var(--cream);
    padding: 25px;
    border-radius: var(--radius);
    margin: 20px 0;
    font-size: 1.1rem;
    line-height: 1.6;
    border-left: 5px solid var(--banana);
    position: relative;
    overflow: hidden;
}

.fact-display::before {
    content: '💡';
    position: absolute;
    top: -10px;
    right: -10px;
    font-size: 3rem;
    opacity: 0.1;
}

/* Message System */
.messages {
    max-height: 300px;
    overflow-y: auto;
    margin-top: 20px;
}

.message {
    background: var(--cream);
    padding: 15px;
    margin: 10px 0;
    border-radius: var(--radius-small);
    border-left: 4px solid var(--leaf);
    animation: slideIn 0.5s ease-out;
}

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

/* Loading States */
.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }

.hidden { display: none !important; }
.visible { display: block !important; }

/* Animations */
@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(1deg); }
    75% { transform: rotate(-1deg); }
}

@keyframes bounceIn {
    0% { transform: scale(0.3); opacity: 0; }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); opacity: 1; }
}

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

/* Footer */
.footer {
    text-align: center;
    margin: 60px 0 30px 0;
    color: var(--ink-soft);
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--radius);
    margin: 60px 20px 20px;
}

.footer p {
    margin: 0;
    font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar {
        padding: 10px 0;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
        gap: 10px;
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero {
        margin: 10px;
        padding: 100px 20px 60px;
    }
    
    .btn {
        padding: 14px 24px;
        font-size: 1rem;
        margin: 5px;
    }

    .btn-large {
        padding: 16px 32px;
        font-size: 1.1rem;
    }

    .banana-counter {
        top: 70px;
        right: 10px;
        padding: 10px 15px;
        font-size: 1rem;
    }

    .grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 80px 15px 50px;
    }

    .container {
        padding: 0 15px;
    }

    .card {
        padding: 20px;
    }

    .section {
        padding: 40px 0;
    }
}