/* ==========================
   GENERAL SETTINGS
========================== */

:root {
    --bg-main: #080F1C;
    --bg-card: #101D30;
    --bg-card-hover: #14243A;
    --bg-secondary: #14243A;

    --border: #233954;
    --border-light: #2D496B;

    --blue: #318BFF;
    --blue-light: #55A5FF;
    --cyan: #35C8E8;

    --text-main: #F1F5FC;
    --text-secondary: #A1B1C7;
    --text-muted: #70839E;
}

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

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
}

.container {
    max-width: 1250px;
    margin: 0 auto;
    padding: 40px 30px;
}


/* ==========================
   HEADER
========================== */

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.header h1 {
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -0.8px;
}

.header p {
    color: var(--text-secondary);
    margin-top: 8px;
    font-size: 14px;
}

.status {
    display: flex;
    align-items: center;
    gap: 9px;
    color: var(--text-secondary);
    font-size: 13px;
}

.status-dot {
    width: 9px;
    height: 9px;
    background-color: var(--cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(53, 200, 232, 0.5);
}


/* ==========================
   NAVIGATION
========================== */

.navigation {
    display: flex;
    gap: 10px;
    margin-bottom: 35px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    padding: 11px 20px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.nav-link:hover {
    background-color: var(--bg-card-hover);
    color: var(--text-main);
}

.nav-link.active {
    background: linear-gradient(
        135deg,
        #1C5BAA,
        #16477F
    );
    color: #FFFFFF;
    box-shadow: 0 3px 14px rgba(49, 139, 255, 0.18);
}


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

.overview {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 45px;
}

.card {
    background: linear-gradient(
        145deg,
        #14243A,
        #0F1B2D
    );
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    min-height: 125px;
    transition: border-color 0.2s ease,
                transform 0.2s ease;
}

.card:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
}

.card p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 18px;
}

.card h2 {
    font-size: 29px;
    font-weight: 700;
    color: var(--blue-light);
}


/* ==========================
   ACTIVITIES TABLE
========================== */

.activities-section h2 {
    font-size: 20px;
    margin-bottom: 20px;
}

.table-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 650px;
}

thead {
    background-color: var(--bg-secondary);
}

th {
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    text-align: left;
    padding: 18px;
}

td {
    padding: 19px 18px;
    border-top: 1px solid var(--border);
    font-size: 13px;
    color: #DCE6F4;
}

tbody tr {
    transition: background-color 0.2s ease;
}

tbody tr:hover {
    background-color: var(--bg-card-hover);
}


/* ==========================
   ACTIVITY TYPE LABELS
========================== */

.activity-type {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 20px;
    background-color: #17365B;
    color: var(--blue-light);
    font-size: 11px;
    font-weight: 600;
}


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

footer {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 12px;
    text-align: center;
}


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

@media (max-width: 850px) {

    .overview {
        grid-template-columns: repeat(2, 1fr);
    }

}


@media (max-width: 550px) {

    .container {
        padding: 25px 16px;
    }

    .header {
        align-items: flex-start;
        gap: 15px;
        flex-direction: column;
    }

    .header h1 {
        font-size: 25px;
    }

    .overview {
        gap: 12px;
    }

    .card {
        padding: 18px;
        min-height: 110px;
    }

    .card h2 {
        font-size: 24px;
    }

    .navigation {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 100;
        justify-content: space-around;
        gap: 0;
        margin: 0;
        padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
        background-color: rgba(16, 29, 48, 0.97);
        backdrop-filter: blur(12px);
        border-top: 1px solid var(--border);
        border-bottom: none;
    }

    .nav-link {
        flex: 1;
        text-align: center;
        padding: 12px 8px;
        font-size: 13px;
    }

    .container {
        padding-bottom: 100px;
    }

}