/* ============================================
   CSS Reset & Base Styles
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* ============================================
   CSS Custom Properties
   ============================================ */

:root {
    /* Gradient Backgrounds */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-blue: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-sunset: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-teal: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);

    /* Accent Colors */
    --color-coral: #FF6B6B;
    --color-blue: #4ECDC4;
    --color-yellow: #FFE66D;
    --color-purple: #667eea;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-light-gray: #f8f9fa;
    --color-gray: #6c757d;
    --color-dark: #333333;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.2);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-dark);
}

h1 {
    font-size: 2.5rem;
    font-weight: 900;
}

h2 {
    font-size: 2rem;
    font-weight: 800;
}

h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-gray);
}

/* ============================================
   Layout
   ============================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xxl) 0;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-family: 'Poppins', sans-serif;
    font-size: 1.125rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-xl);
    border: none;
    cursor: pointer;
    transition: all var(--transition-medium);
    text-align: center;
    box-shadow: var(--shadow-md);
}

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

.btn--primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn--secondary {
    background: var(--color-white);
    color: var(--color-purple);
    font-weight: 700;
}

.btn--secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    overflow: hidden;
    padding: var(--spacing-lg) 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.8) 100%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero__content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero__title {
    font-size: 2.5rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero__subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero__floating-element {
    position: absolute;
    border-radius: 50%;
    opacity: 0.15;
    z-index: 1;
}

.hero__floating-element--1 {
    width: 300px;
    height: 300px;
    background: var(--gradient-blue);
    top: 10%;
    left: -5%;
}

.hero__floating-element--2 {
    width: 200px;
    height: 200px;
    background: var(--gradient-sunset);
    bottom: 15%;
    right: -3%;
}

.hero__floating-element--3 {
    width: 150px;
    height: 150px;
    background: var(--gradient-teal);
    top: 50%;
    right: 10%;
}

/* ============================================
   Benefits Section
   ============================================ */

.benefits {
    background: var(--color-light-gray);
}

.section__title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section__title--white {
    color: var(--color-white);
    background: none;
    -webkit-text-fill-color: var(--color-white);
}

.benefits__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.benefit-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-medium);
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
}

.benefit-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.benefit-card__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.benefit-card:nth-child(2) .benefit-card__icon {
    background: var(--gradient-blue);
}

.benefit-card:nth-child(3) .benefit-card__icon {
    background: var(--gradient-teal);
}

.benefit-card:nth-child(4) .benefit-card__icon {
    background: var(--gradient-sunset);
}

.benefit-card:nth-child(5) .benefit-card__icon {
    background: var(--gradient-primary);
}

.benefit-card:nth-child(6) .benefit-card__icon {
    background: var(--gradient-secondary);
}

.benefit-card__icon svg {
    width: 100%;
    height: 100%;
    color: var(--color-white);
}

.benefit-card__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.benefit-card__description {
    font-size: 1rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
}

.benefit-card__metric {
    font-family: 'Poppins', sans-serif;
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0;
    line-height: 1;
}

.benefit-card:nth-child(2) .benefit-card__metric {
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.benefit-card:nth-child(3) .benefit-card__metric {
    background: var(--gradient-teal);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.benefit-card:nth-child(4) .benefit-card__metric {
    background: var(--gradient-sunset);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.benefit-card:nth-child(5) .benefit-card__metric {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.benefit-card:nth-child(6) .benefit-card__metric {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.benefit-card__metric-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ============================================
   Contact Section
   ============================================ */

.contact {
    background: var(--gradient-blue);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.95) 0%, rgba(0, 242, 254, 0.85) 100%);
    z-index: 1;
}

.contact .container {
    position: relative;
    z-index: 2;
}

.contact__content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact__subtitle {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
}

.contact__form {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    text-align: left;
}

.form__group {
    margin-bottom: var(--spacing-md);
}

.form__label {
    display: block;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.form__input {
    width: 100%;
    padding: 0.875rem 1.25rem;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    background: var(--color-white);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-purple);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form__textarea {
    resize: vertical;
    min-height: 120px;
}

.form__input::placeholder {
    color: #aaa;
}

.contact__form .btn {
    width: 100%;
    margin-top: var(--spacing-sm);
}

.form__message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 600;
    display: none;
}

.form__message--success {
    background: #d4edda;
    color: #155724;
    display: block;
}

.form__message--error {
    background: #f8d7da;
    color: #721c24;
    display: block;
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet: 768px and up */
@media (min-width: 768px) {
    h1 {
        font-size: 3.5rem;
    }

    h2 {
        font-size: 2.5rem;
    }

    h3 {
        font-size: 1.75rem;
    }

    p {
        font-size: 1.125rem;
    }

    section {
        padding: var(--spacing-xxl) 0;
    }

    .hero__title {
        font-size: 3.5rem;
    }

    .hero__subtitle {
        font-size: 1.25rem;
    }

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

/* Desktop: 1024px and up */
@media (min-width: 1024px) {
    h1 {
        font-size: 4rem;
    }

    h2 {
        font-size: 3rem;
    }

    .hero__title {
        font-size: 4rem;
    }

    .hero__subtitle {
        font-size: 1.375rem;
    }

    .benefits__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-xl);
    }

    .section__title {
        font-size: 3rem;
    }
}

/* Large Desktop: 1440px and up */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
}

/* Mobile fine-tuning */
@media (max-width: 767px) {
    .hero {
        min-height: auto;
        padding: var(--spacing-xxl) 0;
    }

    .btn {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }

    .benefit-card {
        padding: var(--spacing-md);
    }

    .benefit-card__icon {
        width: 60px;
        height: 60px;
    }

    .benefit-card__metric {
        font-size: 2.5rem;
    }
}