:root {
    --primary: #00c896;
    --primary-dark: #00a075;
    --primary-light: #33d4ac;
    --secondary: #6366f1;
    --secondary-dark: #4f46e5;
    --accent: #f59e0b;
    --dark: #0f172a;
    --dark-surface: #1e293b;
    --dark-elevated: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border: #334155;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--text-primary);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Animated Background */
.bg-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.4;
}

.bg-decoration::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    top: -200px;
    right: -150px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(100px);
    animation: float 20s ease-in-out infinite;
}

.bg-decoration::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    bottom: -150px;
    left: -100px;
    background: radial-gradient(circle, var(--secondary) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(100px);
    animation: float 25s ease-in-out infinite reverse;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(50px, -80px) scale(1.1);
    }

    66% {
        transform: translate(-30px, 50px) scale(0.9);
    }
}

/* Header */
.navbar {
    background: rgba(15, 23, 42, 0.8) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary) !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.3s;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
}

/* Main Content */
.content-wrapper {
    position: relative;
    z-index: 1;
    padding: 3rem 0;
    min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Card Styles */
.tool-card {
    background: var(--dark-surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(20px);
    animation: fadeInUp 0.6s ease-out 0.1s;
    animation-fill-mode: both;
}

.card-header-custom {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.card-description {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin: 0;
}

/* Form Elements */
.form-label {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-control,
.form-select {
    background: var(--dark-elevated);
    border: 2px solid var(--border);
    color: var(--text-primary);
    padding: 0.875rem 1rem;
    border-radius: 12px;
    font-family: 'Fira Code', monospace;
    transition: all 0.3s;
}

.form-control:focus,
.form-select:focus {
    background: var(--dark-elevated);
    border-color: var(--primary);
    color: var(--text-primary);
    box-shadow: 0 0 0 4px rgba(0, 200, 150, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: none;
    padding: 0.875rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0, 200, 150, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 200, 150, 0.4);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.btn-secondary {
    background: var(--dark-elevated);
    border: 2px solid var(--border);
    color: var(--text-primary);
    padding: 0.875rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--dark-surface);
}

.btn-copy {
    background: var(--secondary);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

/* Algorithm Selector */
.algorithm-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.algorithm-btn {
    background: var(--dark-elevated);
    border: 2px solid var(--border);
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}

.algorithm-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.algorithm-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 15px rgba(0, 200, 150, 0.3);
}

/* Result Display */
.result-container {
    background: var(--dark);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1.5rem;
    position: relative;
    min-height: 150px;
    display: flex;
    flex-direction: column;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.result-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-value {
    font-family: 'Fira Code', monospace;
    color: var(--primary);
    font-size: 1rem;
    word-break: break-all;
    line-height: 1.8;
    flex: 1;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    flex: 1;
    min-height: 100px;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}

/* Check Hash Section */
.check-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border);
}

.match-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    margin-top: 1rem;
}

.match-status.success {
    background: rgba(34, 197, 94, 0.2);
    color: var(--success);
    border: 2px solid var(--success);
}

.match-status.danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
    border: 2px solid var(--danger);
}

/* Ad Container */
.ad-container {
    background: var(--dark-surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 1rem;
    position: sticky;
    top: 2rem;
    animation: fadeInUp 0.6s ease-out 0.2s;
    animation-fill-mode: both;
}

.ad-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
    text-align: center;
    font-weight: 600;
}

.ad-content {
    min-height: 600px;
    background: linear-gradient(135deg, var(--dark-elevated), var(--dark-surface));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
}

.ad-placeholder {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}

.ad-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--dark-surface);
    border: 1px solid var(--border);
    border-radius: 15px;
    padding: 1.5rem;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(0, 200, 150, 0.2);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

/* SEO Content */
.seo-content {
    background: var(--dark-surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2.5rem;
    margin-top: 3rem;
}

.seo-content h2 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.75rem;
}

.seo-content h3 {
    color: var(--text-primary);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.seo-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.seo-content ul {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-left: 1.5rem;
}

/* Footer */
footer {
    background: rgba(15, 23, 42, 0.8);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

footer p {
    color: var(--text-secondary);
    margin: 0;
}

footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

footer a:hover {
    text-decoration: underline;
}

/* Toast Notification */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
}

.custom-toast {
    background: var(--dark-elevated);
    border: 2px solid var(--primary);
    color: var(--text-primary);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive */
@media (max-width: 991px) {
    .ad-container {
        position: relative;
        top: 0;
        margin-top: 2rem;
    }

    .ad-content {
        min-height: 250px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .tool-card {
        padding: 1.5rem;
    }

    .algorithm-selector {
        grid-template-columns: repeat(2, 1fr);
    }
}