/* ==========================================
   CSS Variables & Reset
   ========================================== */

:root {
    color-scheme: light dark;

    /* Colors */
    --color-bg: #F5F6F8;
    --color-text-primary: #1D1D1F;
    --color-text-secondary: #86868B;
    --color-accent: #0071E3;
    --color-accent-hover: #0077ED;
    --color-border-soft: rgba(0, 0, 0, 0.08);
    --color-hover-soft: rgba(0, 0, 0, 0.05);
    --color-dropdown-bg: rgba(255, 255, 255, 0.9);
    --color-dropdown-border: rgba(255, 255, 255, 0.5);

    /* Glass effect */
    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    --glass-blur: 32px;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-xxl: 120px;

    /* Border radius */
    --radius-sm: 16px;
    --radius-md: 24px;
    --radius-lg: 32px;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0F1115;
        --color-text-primary: #F5F6F8;
        --color-text-secondary: #B0B3BC;
        --color-accent: #3A95FF;
        --color-accent-hover: #57A6FF;
        --color-border-soft: rgba(255, 255, 255, 0.12);
        --color-hover-soft: rgba(255, 255, 255, 0.08);
        --color-dropdown-bg: rgba(27, 30, 38, 0.92);
        --color-dropdown-border: rgba(255, 255, 255, 0.14);

        --glass-bg: rgba(35, 40, 50, 0.56);
        --glass-border: rgba(255, 255, 255, 0.12);
        --glass-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
    }
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    width: 100%;
}

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

h1,
h2,
h3 {
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
}

h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

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

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

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

/* ==========================================
   Navigation
   ========================================== */

.navbar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md) 0;
    z-index: 10;
}

.logo {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
    letter-spacing: -1px;
}

/* ==========================================
   Glass Card
   ========================================== */

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

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

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-family);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 113, 227, 0.25);
}

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    color: var(--color-text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.75);
    transform: translateY(-2px);
}

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

.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xxl) 0;
}

.glass-bg {
    position: absolute;
    background: radial-gradient(circle, rgba(0, 113, 227, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: float 20s ease-in-out infinite;
}

.glass-bg-1 {
    width: 600px;
    height: 600px;
    top: -100px;
    left: -100px;
}

.glass-bg-2 {
    width: 500px;
    height: 500px;
    bottom: -80px;
    right: -80px;
    animation-delay: -10s;
}

@keyframes float {

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

    50% {
        transform: translate(20px, 20px);
    }
}

.hero .container {
    position: relative;
    z-index: 1;
}

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

.hero-subtitle {
    margin-bottom: var(--spacing-lg);
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
}

/* ==========================================
   Messengers Section
   ========================================== */

.messengers {
    padding: var(--spacing-lg) 0;
}

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

.messenger-icons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    text-align: center;
}

.messenger-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.messenger-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    object-fit: contain;
    display: block;
    padding: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.messenger-item:hover .messenger-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

/* Viber icon needs less padding to appear same size as others */
.messenger-viber {
    padding: 4px;
}

.messenger-item span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

/* ==========================================
   How It Works Section
   ========================================== */

.how-it-works {
    padding: var(--spacing-xl) 0;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    padding: var(--spacing-lg);
    text-align: center;
}

.feature-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-accent);
    color: white;
    border-radius: 50%;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    font-size: 1rem;
}

/* ==========================================
   Value Statement Section
   ========================================== */

.value-statement {
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.value-text {
    max-width: 800px;
    margin: 0 auto;
    color: var(--color-text-primary);
}

/* ==========================================
   Pricing Section
   ========================================== */

.pricing {
    padding: var(--spacing-xl) 0;
}

.pricing-grid {
    align-items: stretch;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.pricing-status {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--color-text-secondary);
    margin: 0;
    padding: var(--spacing-lg) 0;
}

.pricing-status-error {
    color: var(--color-text-primary);
}

.custom-plan-container {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.custom-plan-link {
    display: inline-block;
    color: var(--color-accent);
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: 600;
    padding: 12px 24px;
    border: 2px solid rgba(0, 113, 227, 0.2);
    border-radius: 999px;
    background: rgba(0, 113, 227, 0.05);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.custom-plan-link:hover {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.25);
}

@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

.pricing-card {
    padding: var(--spacing-lg);
    text-align: center;
    display: flex;
    flex-direction: column;
    position: relative;
}

.pricing-card .btn {
    margin-top: auto;
    text-decoration: none;
}

.pricing-featured {
    border: 2px solid var(--color-accent);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-accent);
    color: white;
    padding: 4px 16px;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
}

.pricing-card h3 {
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.price {
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: baseline;
    justify-content: center;
}

.currency {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.amount {
    font-size: 4rem;
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1;
    margin: 0 4px;
}

.period {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
}

.contact-sales-text {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.2;
}

.features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

.features li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-secondary);
    font-size: 1rem;
}

/* ==========================================
   Final CTA Section
   ========================================== */

.final-cta {
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.cta-title {
    margin-bottom: var(--spacing-lg);
}

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

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

.contact-card {
    max-width: 760px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.contact-title {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.contact-subtitle {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.contact-form {
    display: grid;
    gap: var(--spacing-md);
}

.contact-field {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.contact-field label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.contact-field input,
.contact-field textarea {
    width: 100%;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px 14px;
    font: inherit;
    color: var(--color-text-primary);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-field input::placeholder,
.contact-field textarea::placeholder {
    color: var(--color-text-secondary);
}

.contact-field input:focus,
.contact-field textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.18);
}

.contact-field textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-submit {
    justify-self: start;
}

.contact-feedback {
    min-height: 1.5em;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

/* ==========================================
   Footer
   ========================================== */

footer {
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid var(--color-border-soft);
}

footer p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

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

@media (max-width: 768px) {
    section {
        padding: var(--spacing-lg) 0;
    }

    .hero {
        min-height: 80vh;
        padding: var(--spacing-xl) 0;
    }

    .glass-bg-1,
    .glass-bg-2 {
        width: 300px;
        height: 300px;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .messenger-icons {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .value-statement {
        padding: var(--spacing-xl) 0;
    }

    .final-cta {
        padding: var(--spacing-xl) 0;
    }

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

    .contact-submit {
        width: 100%;
        justify-self: stretch;
    }

    /* Fix pricing cards on mobile */
    .pricing-card {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .price .amount {
        font-size: 3rem;
    }

    .pricing-card h3 {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9375rem;
        width: 100%;
        max-width: 280px;
        display: block;
        margin: 0 auto;
    }

    .messenger-icon {
        width: 60px;
        height: 60px;
    }

    /* Additional mobile fixes for pricing */
    .pricing {
        padding: var(--spacing-md) 0;
    }

    .pricing-card {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-md);
    }

    .price .amount {
        font-size: 2.5rem;
    }

    .price .currency {
        font-size: 1.25rem;
    }

    .price .period {
        font-size: 1rem;
    }

    .features li {
        font-size: 0.9375rem;
    }
}

/* Language Switcher */
.language-switcher {
    position: absolute;
    top: 24px;
    right: var(--spacing-md);
    z-index: 20;
}

@media (max-width: 768px) {
    .pricing-grid {
        grid-template-columns: 100% !important;
        display: grid;
    }
}

.current-lang {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--color-text-primary);
    font-weight: 600;
    font-size: 14px;
    font-family: inherit;
    padding: 8px;
    border-radius: 8px;
    transition: background 0.2s;
}

.current-lang:hover {
    background: var(--color-hover-soft);
}

.chevron {
    transition: transform 0.2s;
}

.language-switcher.open .chevron {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--color-dropdown-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--color-dropdown-border);
    padding: 4px;
    min-width: 80px;
    display: none;
    flex-direction: column;
    margin-top: 4px;
    z-index: 21;
}

.language-switcher.open .dropdown-menu {
    display: flex;
}

.lang-option {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 16px;
    text-align: center;
    font-family: inherit;
    font-size: 14px;
    color: var(--color-text-secondary);
    border-radius: 8px;
    transition: all 0.2s;
}

.lang-option:hover {
    background: var(--color-hover-soft);
    color: var(--color-text-primary);
}