/* Reset styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Body styling */
body {
    background: radial-gradient(circle at center, #0c0c1f 0%, #050513 100%);
    color: #c3f8ff;
    font-family: 'Orbitron', sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    overflow-x: hidden;
    position: relative;
}

body::before,
body::after {
    content: "";
    position: fixed;
    width: 300%;
    height: 300%;
    top: -100%;
    left: -100%;
    background: conic-gradient(from 90deg at center, #00f0ff22, #00ffff11, transparent 60%);
    animation: rotateBg 30s linear infinite;
    z-index: 0;
    pointer-events: none;
    opacity: 0.3;
}

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

/* Container */
.container {
    width: 100%;
    max-width: 960px;
    background: rgba(10, 20, 30, 0.95);
    border: 2px solid #4fd1ff;
    border-radius: 24px;
    padding: 50px;
    box-shadow: 0 0 40px #4fd1ffaa, 0 0 100px #00eaff33;
    backdrop-filter: blur(20px);
    position: relative;
    z-index: 1;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 50px;
    z-index: 2;
    position: relative;
}

header h1 {
    font-size: 3.8rem;
    color: #4fd1ff;
    letter-spacing: 0.3em;
    animation: glowPulse 4s ease-in-out infinite;
    text-shadow: 0 0 20px #4fd1ff, 0 0 40px #00d5ff;
}

header .tagline {
    font-size: 1.4rem;
    color: #afffff;
    margin-top: 12px;
    font-weight: 600;
    text-shadow: 0 0 12px #00faff88;
}

/* Main */
main {
    display: flex;
    flex-direction: column;
    gap: 50px;
    z-index: 2;
    position: relative;
}

/* Input Section */
.input-section {
    background: linear-gradient(145deg, #0e1c2b, #122f4f);
    border: 2px solid #00eaff88;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 0 30px #00eaff44;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.input-section:hover {
    transform: scale(1.01);
    box-shadow: 0 0 40px #00eaffaa, 0 0 60px #00aaff88;
}

.input-section h2 {
    margin-bottom: 20px;
    font-size: 1.9rem;
    color: #00eaff;
    text-shadow: 0 0 15px #00eaffcc;
}

/* Inputs */
textarea, input[type="url"], input[type="file"] {
    width: 100%;
    padding: 20px;
    border-radius: 18px;
    border: 1px solid #00d5ff88;
    background: #071a2a;
    color: #e0ffff;
    font-size: 1.1rem;
    box-shadow: inset 0 0 15px #00d5ffaa;
    resize: vertical;
    transition: all 0.4s ease;
}

textarea::placeholder,
input::placeholder {
    color: #00eaffaa;
}

textarea:focus,
input[type="url"]:focus,
input[type="file"]:focus {
    outline: none;
    box-shadow: 0 0 25px #00eaffcc, inset 0 0 10px #00eaff99;
    background: #0e2a3f;
}

/* Button */
.btn {
    margin-top: 25px;
    padding: 16px 34px;
    font-size: 1.3rem;
    font-weight: 700;
    border-radius: 22px;
    border: none;
    cursor: pointer;
    background: linear-gradient(135deg, #4fd1ff, #0fd3ff, #00aaff);
    color: #001f3f;
    box-shadow: 0 0 25px #00f0ffcc;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    transition: all 0.3s ease, transform 0.2s ease;
    position: relative;
    overflow: hidden;
    user-select: none;
}

/* Button ripple effect */
.btn:after {
    content: "";
    position: absolute;
    border-radius: 50%;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.3);
    animation: ripple 0.6s linear;
    pointer-events: none;
    opacity: 0;
    transform: scale(0);
    transition: opacity 0.3s ease;
}

.btn:active:after {
    opacity: 1;
    transform: scale(1);
    transition: transform 0s;
}

@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(2.5);
        opacity: 0;
    }
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
}

.btn:hover {
    transform: scale(1.08);
    box-shadow: 0 0 50px #00f0ffcc, 0 0 80px #00f0ff88;
}

/* Loading spinner */
.loading-spinner {
    border: 4px solid #00aaff44;
    border-top: 4px solid #00f0ffcc;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    animation: spin 1s linear infinite;
    display: inline-block;
    vertical-align: middle;
    margin-left: 10px;
}

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

.btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, #ffffff33, transparent 70%);
    animation: buttonPulse 6s linear infinite;
    z-index: 0;
    pointer-events: none;
}

.btn:hover {
    transform: scale(1.06);
    box-shadow: 0 0 45px #00f0ffcc, 0 0 60px #00f0ff88;
}

@keyframes buttonPulse {
    0%, 100% {
        transform: rotate(0deg);
    }
    50% {
        transform: rotate(180deg);
    }
}

/* Result Section */
.result-section {
    background: linear-gradient(135deg, #112e44, #18354f);
    border: 2px solid transparent;
    border-radius: 18px;
    padding: 30px;
    min-height: 150px;
    box-shadow: inset 0 0 25px #00eaffaa, 0 0 30px #00f0ff44;
    color: #e0ffff;
    font-size: 1.3rem;
    white-space: pre-wrap;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    display: none; /* hide result section initially */
    animation: glowPulse 3s ease-in-out infinite alternate;
}

.result-emoji {
    font-size: 2.5rem;
    margin-right: 12px;
    vertical-align: middle;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.result-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, #00f0ff33, transparent 70%);
    animation: resultBgPulse 8s linear infinite;
    z-index: 0;
    pointer-events: none;
}

.result-section:hover {
    transform: scale(1.02);
    box-shadow: inset 0 0 30px #00eaffcc, 0 0 50px #00f0ff88;
    border-color: #00f0ff;
}

.result-section h2 {
    margin-bottom: 18px;
    font-size: 1.8rem;
    color: #4fd1ff;
    text-shadow: 0 0 20px #4fd1ffcc, 0 0 40px #00f0ff88;
    background: linear-gradient(90deg, #4fd1ff, #00f0ff, #4fd1ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientText 3s ease-in-out infinite;
}

.result-section p {
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.2rem;
    line-height: 1.6;
    color: #afffff;
    text-shadow: 0 0 10px #00eaff88;
    z-index: 1;
    position: relative;
}

/* Background animation */
@keyframes resultBgPulse {
    0%, 100% {
        transform: rotate(0deg);
    }
    50% {
        transform: rotate(180deg);
    }
}

/* Gradient text animation */
@keyframes gradientText {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* Footer */
footer {
    margin-top: 50px;
    text-align: center;
    font-size: 1.05rem;
    color: #00eaffcc;
    letter-spacing: 0.2em;
    text-shadow: 0 0 12px #00faff88;
}

/* Header animation */
@keyframes glowPulse {
    0%, 100% {
        text-shadow: 0 0 15px #4fd1ff, 0 0 30px #4fd1ff;
    }
    50% {
        text-shadow: 0 0 25px #00f0ff, 0 0 50px #00cfff;
    }
}

@media (max-width: 768px) {
    .container {
        max-width: 100%;
        padding: 15px 10px;
        margin: 10px;
        border-radius: 16px;
        border: none; /* remove border on mobile */
        box-shadow: 0 0 15px #4fd1ff55, 0 0 40px #00eaff11; /* softer shadow */
    }

    .tab-buttons {
        flex-direction: column;
        gap: 12px;
    }

    .tab-btn {
        font-size: 1rem;
        padding: 10px 16px;
    }

    .hero-section h2 {
        font-size: 2rem;
    }

    .hero-section p {
        font-size: 1.1rem;
    }
}
}

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 40px 20px;
    animation: fadeIn 1s ease forwards;
}

.hero-section h2 {
    font-size: 2.8rem;
    margin-bottom: 15px;
    color: #4fd1ff;
    text-shadow: 0 0 20px #4fd1ffcc;
}

.hero-section p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    color: #afffff;
}

/* Tabs */
.tabs {
    animation: fadeIn 1s ease forwards;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

.tab-btn {
    background: transparent;
    border: 2px solid #4fd1ff;
    color: #4fd1ff;
    padding: 12px 24px;
    font-size: 1.2rem;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}

.tab-btn:hover {
    background: #4fd1ff;
    color: #001f3f;
}

.tab-btn.active {
    background: #00aaff;
    color: #001f3f;
    box-shadow: 0 0 15px #00aaffcc;
}

/* Tab Content */
.tab-content {
    display: none;
    animation: slideIn 0.5s ease forwards;
}

.tab-content.active {
    display: block;
}

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

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

    header h1 {
        font-size: 2.5rem;
    }

    header .tagline {
        font-size: 1.2rem;
    }

    main {
        gap: 30px;
    }

    .input-section {
        padding: 20px;
        border-radius: 14px;
        box-shadow: 0 0 20px #00eaff33;
    }

    .input-section h2 {
        font-size: 1.5rem;
    }

    textarea, input[type="url"], input[type="file"] {
        font-size: 1rem;
        padding: 15px;
        border-radius: 14px;
    }

    .btn {
        padding: 12px 20px;
        font-size: 1.1rem;
        border-radius: 18px;
        width: 100%;
        box-shadow: 0 0 20px #00f0ffcc;
    }

    .result-section {
        padding: 20px;
        border-radius: 14px;
        min-height: 120px;
    }

    .result-section h2 {
        font-size: 1.5rem;
    }

    .result-section p {
        font-size: 1rem;
    }
}