:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark-color: #1f2937;
    --light-color: #f9fafb;
    --gray-color: #9ca3af;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark-color);
    overflow-x: hidden;
}

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s infinite linear;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--primary-color);
    top: -150px;
    left: -150px;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: var(--secondary-color);
    top: 50%;
    right: -100px;
    animation-delay: -5s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: var(--success-color);
    bottom: -75px;
    left: 20%;
    animation-delay: -10s;
}

.shape-4 {
    width: 250px;
    height: 250px;
    background: var(--warning-color);
    bottom: -125px;
    right: 20%;
    animation-delay: -15s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    33% {
        transform: translateY(-30px) rotate(120deg);
    }
    66% {
        transform: translateY(30px) rotate(240deg);
    }
}

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

/* Navbar */
.navbar {
    padding: 20px 0;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.8);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 28px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary-color);
}

.btn-login {
    padding: 10px 25px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    padding: 80px 0;
    color: white;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 50px;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 20px;
}

.text-gradient {
    background: linear-gradient(45deg, #fff, #a5b4fc);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
}

.typing-text {
    display: inline-block;
    overflow: hidden;
    border-right: 3px solid white;
    white-space: nowrap;
    animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from { width: 0 }
    to { width: 100% }
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: white }
}

.hero-subtitle {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.tracker-form {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-group {
    display: flex;
    align-items: center;
    background: white;
    border-radius: 15px;
    padding: 5px;
    box-shadow: var(--shadow);
}

.input-group i {
    padding: 0 15px;
    color: var(--gray-color);
}

.input-group input {
    flex: 1;
    border: none;
    padding: 15px 0;
    font-size: 16px;
    outline: none;
    background: transparent;
}

.btn-primary, .btn-success {
    padding: 15px 30px;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

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

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

.btn-primary:hover, .btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn-success:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.form-note {
    margin-top: 15px;
    font-size: 14px;
    opacity: 0.8;
    text-align: center;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    width: 300px;
    box-shadow: var(--shadow);
    animation: float-card 3s ease-in-out infinite;
}

@keyframes float-card {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.product-image {
    height: 200px;
    background: linear-gradient(45deg, #6366f1, #8b5cf6);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.price-tag {
    background: white;
    padding: 15px 25px;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    box-shadow: var(--shadow);
}

.old-price {
    text-decoration: line-through;
    color: var(--danger-color);
    font-size: 14px;
}

.current-price {
    font-size: 24px;
    font-weight: 700;
    color: var(--success-color);
}

.discount {
    background: var(--danger-color);
    color: white;
    padding: 3px 10px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
}

.pulse-animation {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--success-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.product-info p {
    color: var(--gray-color);
    margin-bottom: 15px;
}

.price-history {
    height: 50px;
    background: #f3f4f6;
    border-radius: 10px;
    position: relative;
    overflow: hidden;
}

.chart-line {
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    bottom: 10px;
    animation: chart-grow 2s ease-out;
}

@keyframes chart-grow {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

/* Sections */
.section {
    padding: 80px 0;
    background: white;
}

.dark-section {
    background: var(--dark-color);
    color: white;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* Steps */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.step-card {
    background: var(--light-color);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.step-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.step-icon {
    position: relative;
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 32px;
}

.step-number {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 30px;
    height: 30px;
    background: var(--success-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
}

.step-card h3 {
    margin-bottom: 15px;
    font-size: 22px;
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.8s ease-out forwards;
}

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

.step-card:nth-child(2) {
    animation-delay: 0.3s;
}

.step-card:nth-child(3) {
    animation-delay: 0.6s;
}

/* Trackers List */
.trackers-container {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.trackers-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.tracker-card {
    background: white;
    border-radius: 15px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    animation: slideIn 0.5s ease-out;
}

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

.tracker-card:hover {
    transform: translateY(-5px);
}

.tracker-image {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.tracker-info {
    flex: 1;
}

.tracker-info h4 {
    margin-bottom: 5px;
    font-size: 16px;
}

.tracker-price {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 10px 0;
}

.current {
    font-weight: 700;
    font-size: 18px;
    color: var(--success-color);
}

.original {
    text-decoration: line-through;
    color: var(--danger-color);
    font-size: 14px;
}

.tracker-actions {
    display: flex;
    gap: 10px;
}

.btn-icon {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    border: none;
    background: var(--light-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--primary-color);
    color: white;
}

.empty-state {
    text-align: center;
    padding: 50px;
    grid-column: 1 / -1;
}

.empty-state i {
    margin-bottom: 20px;
    color: var(--gray-color);
}

/* Footer */
.footer {
    background: #111827;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 20px;
    color: white;
}

.footer-section a {
    display: block;
    color: var(--gray-color);
    text-decoration: none;
    margin-bottom: 10px;
    transition: var(--transition);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray-color);
}

.close-modal:hover {
    color: var(--dark-color);
}

/* Spinner */
.spinner-container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .input-group {
        flex-direction: column;
        background: transparent;
        box-shadow: none;
        gap: 10px;
    }
    
    .input-group input {
        width: 100%;
        padding: 15px;
        border-radius: 10px;
        background: white;
    }
    
    .btn-primary, .btn-success {
        width: 100%;
        justify-content: center;
    }
    
    .nav-links {
        display: none;
    }
}