/* ========================================
   HELTEC Front Page - Design System
   ======================================== */

:root {
    /* Colors */
    --fp-navy: #002040;
    --fp-navy-light: #003366;
    --fp-navy-mid: #002d5c;
    --fp-navy-dark: #001a33;
    --fp-yellow: #CCFF00;
    --fp-yellow-hover: #b3e600;
    --fp-white: #FFFFFF;
    --fp-gray-bg: #f8f9fa;
    --fp-gray-bg-alt: #f4f6f8;
    --fp-gray-light: #f8fafb;

    /* Text colors */
    --fp-text-dark: #1A1A1A;
    --fp-text-muted: #4A5565;
    --fp-text-subtle: #364153;
    --fp-text-light: #D1D5DC;
    --fp-text-gray: #99A1AF;

    /* Typography — Figma (Tailwind v4) と同じフォントスタック */
    --fp-font: Helvetica, 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    --fp-font-size-hero: 64px;
    --fp-font-size-section: 36px;
    --fp-font-size-heading-md: 24px;
    --fp-font-size-heading-sm: 20px;
    --fp-font-size-body-lg: 20px;
    --fp-font-size-body: 18px;
    --fp-font-size-body-base: 16px;
    --fp-font-size-small: 14px;
    --fp-font-size-label: 12px;

    /* Spacing */
    --fp-section-py: 64px;
    --fp-container-max: 1280px;
    --fp-container-px: 32px;

    /* Shadows */
    --fp-shadow-card: 0 4px 6px -1px rgba(0, 32, 64, 0.1), 0 2px 4px -2px rgba(0, 32, 64, 0.1);
    --fp-shadow-card-hover: 0 20px 25px -5px rgba(0, 32, 64, 0.15), 0 8px 10px -6px rgba(0, 32, 64, 0.1);
    --fp-shadow-2xl: 0 25px 50px -12px rgba(0, 32, 64, 0.25);
    --fp-shadow-glow-yellow: 0 0 20px rgba(204, 255, 0, 0.3);
    --fp-shadow-glow-yellow-intense: 0 0 30px rgba(204, 255, 0, 0.5), 0 0 60px rgba(204, 255, 0, 0.2);

    /* Transitions */
    --fp-transition: all 0.3s cubic-bezier(0, 0, 0.2, 1);
    --fp-transition-card: transform 0.3s ease, box-shadow 0.3s ease;

    /* Border Radius */
    --fp-radius: 8px;
    --fp-radius-lg: 12px;
    --fp-radius-xl: 16px;
}

/* ========================================
   Base Overrides
   ======================================== */

/* Override common.css #main opacity animation */
#main.fp {
    opacity: 1 !important;
    animation: none !important;
}

.fp-page .fp {
    font-family: var(--fp-font);
    font-size: 16px;
    font-variation-settings: normal;
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
}

/* ========================================
   Shared Components
   ======================================== */

/* Container */
.fp-container {
    max-width: var(--fp-container-max);
    margin: 0 auto;
    padding: 0 var(--fp-container-px);
}

/* Section titles */
.fp-section-title {
    font-size: var(--fp-font-size-section);
    font-weight: 500;
    line-height: 1.375;
    margin: 0;
}

.fp-section-subtitle {
    font-size: var(--fp-font-size-body-lg);
    font-weight: 400;
    line-height: 1.625;
    margin: 0;
}

/* Accent color */
.fp-accent {
    color: var(--fp-yellow);
}

/* CTA Buttons */
.fp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 32px;
    border-radius: var(--fp-radius);
    font-size: 16px;
    font-weight: 700;
    font-family: var(--fp-font);
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--fp-transition);
    line-height: 1.5;
}

.fp-btn--primary {
    background: var(--fp-yellow);
    color: var(--fp-navy);
    box-shadow: 0 2px 4px rgba(0, 32, 64, 0.1);
}

.fp-btn--primary:hover {
    background: var(--fp-yellow-hover);
    transform: scale(1.05);
    box-shadow: var(--fp-shadow-glow-yellow);
}

.fp-btn--secondary {
    background: transparent;
    color: var(--fp-yellow);
    border: 2px solid var(--fp-yellow);
    box-shadow: 0 2px 4px rgba(0, 32, 64, 0.1);
}

.fp-btn--secondary:hover {
    background: var(--fp-yellow);
    color: var(--fp-navy);
    transform: scale(1.05);
    box-shadow: var(--fp-shadow-glow-yellow);
}

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

.fp-btn--white:hover {
    background: #f0f0f0;
    transform: scale(1.05);
}

.fp-btn--lg {
    padding: 14px 40px;
    font-size: var(--fp-font-size-body-lg);
}

/* Arrow icon */
.fp-arrow {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-top: -2px;
}

/* Card hover effect */
.fp-card-hover {
    transition: var(--fp-transition-card);
}

.fp-card-hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--fp-shadow-card-hover);
}

/* ========================================
   Animations
   ======================================== */

@keyframes fp-fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* trust-badges のループは JS (data-fp-trust-scroll) でピクセル精度に制御するため
   旧来の @keyframes fp-scrollLeft/Right は削除。 */

.fp-animate {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fp-animate.fp-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive (Mobile: 640px viewport)
   ======================================== */

@media only screen and (max-width: 640px) {
    :root {
        --fp-font-size-hero: 36px;
        --fp-font-size-section: 24px;
        --fp-font-size-heading-md: 20px;
        --fp-font-size-heading-sm: 18px;
        --fp-font-size-body-lg: 16px;
        --fp-font-size-body: 16px;
        --fp-section-py: 48px;
        --fp-container-px: 16px;
    }

    .fp-btn {
        padding: 12px 20px;
        font-size: 16px;
    }
}