/* ==============================
   VARIABLES CSS
   ============================== */
:root {
    /* Colors */
    --color-text: #ffffff;
    --color-bg-primary: #1e1e1e;
    --color-bg-secondary: #2e2e2e;
    --color-bg-tertiary: #636363;
    --color-accent: #FFD700;
    --color-muted: #dddddd;
    --color-link: blue;
    --color-nav-bg-sm: #333333;
    --color-button-bg: #2e2e2e;
    --color-button-hover: #ffd700;
    --color-button-active: #daa520;
    --color-accordion-bg: #1a1a1a;
    --color-accordion-hover: #444444;
    --color-shadow-light: rgba(0, 0, 0, 0.2);
    --color-shadow-dark: rgba(0, 0, 0, 0.5);
    --color-overlay: rgba(0, 0, 0, 0.6);
    --background-modal: rgba(0, 0, 0, 0.5);
    --backdrop-modal: blur(5px);

    /* Spacing */
    --spacing-xxs: 5px;
    --spacing-xs: 10px;
    --spacing-sm: 15px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    --spacing-xl: 40px;
    --spacing-xxl: 50px;

    /* Typography */
    --fs-nav: 1.25rem;
    --fs-button: 1rem;
    --fs-title-lg: 2em;
    --fs-title-md: 1.5em;
    --fs-text: 1em;
    --letter-spacing: 2px;

    /* Border & Radius */
    --radius-sm: 5px;
    --radius-md: 8px;

    /* Shadows */
    --shadow-sm: 0 4px 6px var(--color-shadow-light);
    --shadow-md: 0 4px 10px var(--color-shadow-dark);

    /* Transitions */
    --transition-fast: all 0.3s ease;
    --transition-button: all 0.4s ease-in-out;
}

/* ==============================
   NEWSLETTER NAVBAR
   ============================== */
.newsletter-navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text);
    padding: var(--spacing-sm) var(--spacing-md);
    position: relative;
}

.newsletter-navbar-toggler {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.25rem;
    cursor: pointer;
}

.newsletter-navbar-toggler-icon {
    display: block;
    width: 30px;
    height: 3px;
    background-color: var(--color-text);
    margin: var(--spacing-xs) 0;
    border-radius: var(--radius-sm);
}

.newsletter-navbar-collapse {
    display: flex;
    justify-content: center;
    width: 100%;
    transition: max-height 0.3s ease;
}

.newsletter-navbar-nav {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
    margin: 0 auto;
    padding: 0;
}

.newsletter-nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-size: var(--fs-nav);
    transition: var(--transition-fast);
}

.newsletter-nav-link.active,
.newsletter-nav-link:hover {
    color: var(--color-accent);
    transform: scale(1.1);
}

/* ==============================
   Modal newsletter
   ============================== */

.background-modal-newsletter {
    backdrop-filter: var(--backdrop-modal);
    background-color: var(--background-modal);
    border: 1px solid var(--color-accent);
}

.btn-close:hover{
    cursor: pointer;
}

/* ==============================
   NEWSLETTER TITLE & SECTIONS
   ============================== */
.title-newsletter{
    text-align: center;
    color: var(--color-accent);
}

.content-section {
    display: none;
    padding: var(--spacing-md);
    margin: var(--spacing-xs) 0;
}

.content-section.active {
    display: block;
}

.background-newsletter {
    background-color: var(--color-nav-bg-sm);
}

/* ==============================
   BUTTON NEWSLETTER
   ============================== */
.button-newsletter {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    background-color: var(--color-button-bg);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: var(--fs-button);
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transform: translateY(0);
    transition: var(--transition-button);
}

.button-newsletter:hover {
    background-color: var(--color-button-hover);
    border-color: var(--color-button-hover);
    color: #000;
    box-shadow: 0 8px 12px var(--color-shadow-light);
    transform: translateY(-4px);
}

.button-newsletter:active {
    background-color: var(--color-button-active);
    box-shadow: 0 2px 4px var(--color-shadow-light);
    transform: translateY(2px);
}

.button-newsletter:focus {
    outline: 2px dashed var(--color-accent);
    outline-offset: 3px;
}

/* ==============================
   MEDIA ZOOM ICON
   ============================== */
.media-container {
    position: relative;
    display: inline-block;
}

.zoom-image-newsletter {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 50px;
    height: 50px;
    background-color: #000;
    color: var(--color-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    opacity: 0.8;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

.media-container:hover .zoom-image-newsletter {
    opacity: 1;
    color: var(--color-accent);
    transform: scale(1.1);
}

/* ==============================
   ROADMAP SECTION
   ============================== */
.title-roadmap {
    color: var(--color-accent);
    font-size: var(--fs-title-md);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing);
    margin-bottom: var(--spacing-md);
}

.roadmap-content {
    background-color: var(--color-bg-secondary);
    box-shadow: 0 4px 12px var(--color-shadow-light);
    margin: var(--spacing-lg) auto;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    width: 95%;
    color: var(--color-text);
}

.roadmap {
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: auto;
    padding-bottom: var(--spacing-xl);
}

/* Timeline */
.timeline {
    display: flex;
    position: relative;
    margin: auto;
    align-items: flex-start;
    width: max-content;
}

.timeline-line {
    position: absolute;
    top: 50px;
    left: 0;
    right: 0;
    height: 4px;
    background-color: var(--color-accent);
    z-index: 1;
}

.timeline-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 var(--spacing-md);
    min-width: 300px;
    z-index: 2;
}

.timeline-date {
    font-size: var(--fs-text);
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.timeline-circle {
    position: absolute;
    top: 50px;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    background-color: var(--color-accent);
    border: 3px solid var(--color-bg-secondary);
    border-radius: 50%;
    z-index: 2;
}

.timeline-content {
    width: 320px;
    margin-top: 80px;
    padding-top: var(--spacing-sm);
    text-align: center;
    background-color: var(--color-accordion-bg);
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 8px var(--color-shadow-light);
}

/* ==============================
   ACCORDION
   ============================== */
.accordion-button {
    width: 100%;
    text-align: left;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1.1em;
    background-color: var(--color-accordion-bg);
    color: var(--color-text);
    border: none;
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    outline: none;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    transition: background-color 0.3s ease;
}

.accordion-button:hover,
.accordion-button[aria-expanded="true"] {
    background-color: var(--color-accordion-hover);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    padding: 0 var(--spacing-md);
    background-color: var(--color-bg-secondary);
    color: var(--color-text);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    transition: max-height 0.5s ease, padding 0.5s ease;
}

.accordion-content p {
    margin: 0;
    padding: var(--spacing-sm) 0;
    font-size: 0.95em;
    line-height: 1.5;
}

.accordion-item.active .accordion-content {
    max-height: 500px;
    padding: var(--spacing-sm) var(--spacing-md);
}

/* ==============================
   SCROLL GO ROOM
   ============================== */
.scrollGoRoom {
    height: 100%;
}

@media (max-width: 1024px) {
    .scrollGoRoom {
        flex-direction: column;
        height: 100%;
    }

    #inner_left_pannel,
    #inner_right_pannel {
        width: 100%;
    }

    #inner_left_pannel {
        margin-bottom: var(--spacing-md);
    }

    #call_options {
        position: relative;
        width: 100%;
        margin-top: var(--spacing-sm);
    }
}

/* ==============================
   RESPONSIVE TIMELINE & ACCORDION
   ============================== */
@media (max-width: 768px) {
    .timeline-item {
        min-width: 280px;
        margin: 0 var(--spacing-md);
    }

    .timeline-content {
        width: 280px;
    }
}

@media (max-width: 480px) {

    .title-intel,
    .accordion-button {
        font-size: 1em;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .timeline-item {
        min-width: 220px;
        margin: 0 var(--spacing-sm);
    }

    .timeline-date {
        font-size: 0.9em;
    }

    .timeline-content {
        width: 220px;
    }
}