:root
{
    /* very slight lift again */
    --bg1: #173039;   /* was #13262e */
    --bg2: #294b5a;   /* was #243f4d */
    --bg3: #366a7e;   /* was #315f72 */

    --accent: #00d4ff;
    --text: #ffffff;
    --muted: #d8e2e7;

    --card: rgba(0, 0, 0, 0.55);
}

*
{
    box-sizing: border-box;
}

body
{
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);

    background: linear-gradient(
        -45deg,
        var(--bg1),
        var(--bg2),
        var(--bg3),
        #1f9bd6   /* slightly brighter tail */
    );
    background-size: 400% 400%;
    animation: gradientMove 15s ease infinite;
}

@keyframes gradientMove
{
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

a
{
    color: var(--accent);
    text-decoration: none;
}

a:hover
{
    text-decoration: underline;
}

/* ===== TOP BAR ===== */

.topbar
{
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(0, 0, 0, 0.28); /* was 0.30 */
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navwrap
{
    max-width: 1100px;
    margin: 0 auto;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand
{
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand img
{
    height: 100px;
    width: auto;
}

.brand .name
{
    font-weight: bold;
    letter-spacing: 0.8px;
}

.nav
{
    display: flex;
    gap: 16px;
    align-items: center;
}

.nav a
{
    color: #eef9ff;
    padding: 8px 10px;
    border-radius: 8px;
}

.nav a:hover
{
    background: rgba(255, 255, 255, 0.10);
    text-decoration: none;
}

.menu_btn
{
    display: none;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(0, 0, 0, 0.22);
    color: #ffffff;
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
}

/* ===== CONTENT ===== */

.container
{
    max-width: 1100px;
    margin: 0 auto;
    padding: 30px 16px 60px 16px;
}

/* ===== HERO ===== */

.hero
{
    margin-top: 22px;
    padding: 46px 34px;
    border-radius: 18px;
    background: rgba(0, 0, 0, 0.45); /* was 0.48 */
    box-shadow: 0px 0px 35px rgba(0, 0, 0, 0.65);
}

.hero h1
{
    margin: 0;
    font-size: 44px;
    letter-spacing: 1.2px;
    color: var(--accent);
}

.hero p
{
    margin-top: 16px;
    font-size: 18px;
    line-height: 1.7;
    color: var(--muted);
    max-width: 820px;
}

.hero .cta
{
    margin-top: 22px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn
{
    display: inline-block;
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(0, 0, 0, 0.32);
    color: #ffffff;
    font-weight: bold;
}

.btn.primary
{
    border-color: rgba(0, 212, 255, 0.55);
    background: rgba(0, 212, 255, 0.15);
}

/* ===== GRID ===== */

.grid
{
    margin-top: 22px;
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(3, 1fr);
}

/* ===== CARDS ===== */

.card
{
    background: rgba(0, 0, 0, 0.37); /* was 0.40 */
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    padding: 18px 18px;
    box-shadow: 0px 0px 18px rgba(0, 0, 0, 0.38);
}

.card h3
{
    margin: 0 0 10px 0;
    color: #eef9ff;
}

.card p
{
    margin: 0;
    color: var(--muted);
    line-height: 1.7;
}

/* ===== SECTION ===== */

.section
{
    margin-top: 26px;
    padding: 28px 24px;
    border-radius: 18px;
    background: rgba(0, 0, 0, 0.33); /* was 0.36 */
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.section h2
{
    margin: 0 0 14px 0;
    color: #eef9ff;
}

.section p
{
    margin: 0;
    color: var(--muted);
    line-height: 1.8;
}

/* ===== FOOTER ===== */

.footer
{
    margin-top: 36px;
    padding: 20px 0;
    color: rgba(255, 255, 255, 0.70);
    text-align: center;
}

/* ===== FORMS ===== */

.form_row
{
    margin-top: 14px;
}

input,
textarea
{
    width: 100%;
    padding: 12px 12px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(0, 0, 0, 0.32);
    color: #ffffff;
    outline: none;
}

textarea
{
    min-height: 140px;
    resize: vertical;
}

.notice_ok
{
    margin-top: 14px;
    padding: 12px 12px;
    border-radius: 12px;
    background: rgba(0, 255, 160, 0.14);
    border: 1px solid rgba(0, 255, 160, 0.28);
}

.notice_err
{
    margin-top: 14px;
    padding: 12px 12px;
    border-radius: 12px;
    background: rgba(255, 0, 80, 0.14);
    border: 1px solid rgba(255, 0, 80, 0.28);
}

/* ===== RESPONSIVE ===== */

@media (max-width: 900px)
{
    .grid
    {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 820px)
{
    .menu_btn
    {
        display: inline-block;
        z-index: 1001;
    }

    .nav
    {
        display: none;
        position: absolute;
        right: 16px;
        top: 78px;
        flex-direction: column;

        background: rgba(0, 0, 0, 0.68); /* was 0.70 */
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: 14px;

        padding: 12px;
        min-width: 240px;

        box-shadow: 0px 12px 30px rgba(0, 0, 0, 0.55);
        z-index: 1000;
    }

    .nav.open
    {
        display: flex;
    }
}