/* =========================================
   1. Reset & Base Configuration
   ========================================= */
:root {
    /* Color Palette */
    --color-primary: #1e88e5;
    --color-primary-dark: #1565c0;
    --color-accent: #00e676; /* Green for success/promo */
    --color-accent-hover: #00c853;
    
    --color-bg-body: #0f141f; /* Deep dark blue/charcoal */
    --color-bg-card: #1c2436;
    --color-bg-header: linear-gradient(135deg, #162238 0%, #0f141f 100%);
    
    --color-text-main: #ffffff;
    --color-text-secondary: #aab2bd;
    --color-text-highlight: #64b5f6;

    /* Typography */
    --font-family-base: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.6;
    
    /* Spacing & Layout */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --container-width: 1200px;
    --border-radius-sm: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-pill: 50rem;

    /* Effects */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(30, 136, 229, 0.4);
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-base);
    background-color: var(--color-bg-body);
    color: var(--color-text-main);
    line-height: var(--line-height-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* =========================================
   2. Layout Utilities
   ========================================= */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
}

.row-center {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.text-center {
    text-align: center;
    width: 100%;
}

.col-xs-12 {
    width: 100%;
}

/* =========================================
   3. Top Mobile Menu / Navigation
   ========================================= */
.line-menu-mobile {
    padding: var(--spacing-sm) 0;
    background: rgba(28, 36, 54, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.line-menu-mobile .row-center {
    justify-content: flex-end; /* Align login buttons to right */
    gap: var(--spacing-sm);
}

.landing-header-right-login,
.landing-header-right-reg {
    padding: 0.6em 1.5em;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.landing-header-right-login {
    background: transparent;
    color: var(--color-text-main);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.landing-header-right-login:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.landing-header-right-reg {
    background: var(--color-accent);
    color: #000;
    box-shadow: 0 4px 15px rgba(0, 230, 118, 0.2);
}

.landing-header-right-reg:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 230, 118, 0.4);
}

/* =========================================
   4. Header / Hero Section
   ========================================= */
.header-box {
    position: relative;
    background: var(--color-bg-header);
    min-height: 80vh; /* Full viewport height impact */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-lg) 0;
    overflow: hidden;
}

/* Decorative background glow */
.header-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(30,136,229,0.2) 0%, rgba(0,0,0,0) 70%);
    transform: translateX(-50%);
    z-index: 0;
    pointer-events: none;
}

/* Fix for legacy .table/.ctr structure */
.header-box .table,
.header-box .ctr {
    display: block;
    width: 100%;
    position: relative;
    z-index: 1;
}

.header-box h1 {
    font-size: clamp(2rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(to right, #fff 20%, var(--color-text-highlight) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    animation: fadeInDown 0.8s ease-out;
}

.text-head {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.text-head b {
    color: var(--color-accent);
    font-weight: 700;
}

/* Promo Code Styling */
.promo {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.2em 0.6em;
    border: 1px dashed var(--color-primary);
    color: var(--color-primary);
    border-radius: var(--border-radius-sm);
    font-family: monospace;
    font-size: 1.2em;
    cursor: copy;
    transition: var(--transition-fast);
    position: relative;
}

.promo:hover {
    background: rgba(30, 136, 229, 0.2);
    transform: scale(1.05);
}

.promo::after {
    content: 'Click to copy';
    position: absolute;
    bottom: 120%;
    left: 50%;
    transform: translateX(-50%);
    background: #000;
    color: #fff;
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 4px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    white-space: nowrap;
    font-family: var(--font-family-base);
}

.promo:hover::after {
    opacity: 1;
}

.inform-promo {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
    opacity: 0.8;
}

/* =========================================
   5. Content Section
   ========================================= */
.content {
    padding: var(--spacing-lg) 0;
}

.content h2 {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    color: var(--color-text-main);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding-left: 1rem;
    border-left: 4px solid var(--color-primary);
}

.content p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    text-align: justify;
}

.content ul {
    list-style: none;
    margin: var(--spacing-sm) 0;
    padding-left: 1rem;
}

.content ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-text-secondary);
}

.content ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

/* Images */
.img {
    margin: var(--spacing-md) 0;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    position: relative;
}

.img::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
    pointer-events: none;
}

img.lazyload, img {
    display: block;
    width: 100%;
    height: auto;
    transition: transform 0.5s ease;
}

.img:hover img {
    transform: scale(1.02);
}

/* =========================================
   6. Main CTA Button (Reusable)
   ========================================= */
.button.href-site {
    display: inline-block;
    background: linear-gradient(45deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
    padding: 1rem 3rem;
    border-radius: var(--border-radius-pill);
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    box-shadow: var(--shadow-glow);
    transition: all var(--transition-smooth);
    border: none;
    position: relative;
    overflow: hidden;
    margin: var(--spacing-sm) 0;
    text-align: center;
}

.button.href-site:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 30px rgba(30, 136, 229, 0.6);
    background: linear-gradient(45deg, var(--color-primary-dark), var(--color-primary));
}

.button.href-site:active {
    transform: translateY(1px);
}

/* Micro-animation shimmer effect */
.button.href-site::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
}

.button.href-site:hover::after {
    left: 100%;
}

/* =========================================
   7. Form Elements (Conceptual for robustness)
   ========================================= */
/* Even though explicit forms aren't in the snippet, 
   these cover potential injected elements or future use */
input[type="text"], 
input[type="email"], 
select {
    width: 100%;
    padding: 0.8rem 1rem;
    margin-bottom: 1rem;
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-main);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(30, 136, 229, 0.2);
}

/* =========================================
   8. Animations
   ========================================= */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =========================================
   9. Media Queries
   ========================================= */
@media (max-width: 768px) {
    /* Mobile Top Bar */
    .line-menu-mobile .row-center {
        justify-content: space-between;
    }
    
    .landing-header-right-login,
    .landing-header-right-reg {
        padding: 0.5em 1em;
        font-size: 0.8rem;
    }

    /* Hero Section */
    .header-box {
        min-height: auto;
        padding: var(--spacing-lg) 0;
    }
    
    .header-box h1 {
        margin-top: var(--spacing-sm);
    }

    /* Content */
    .content h2 {
        border-left: none;
        border-bottom: 2px solid var(--color-primary);
        padding-left: 0;
        padding-bottom: 0.5rem;
    }

    .content p {
        text-align: left;
    }

    .button.href-site {
        width: 100%;
        max-width: 320px;
        padding: 0.8rem 1rem;
        font-size: 1.1rem;
    }
}