:root {
    --bg1: #061826;     /* tamno plava */
    --bg2: #071f2d;     /* tamno plava 2 */
    --card: #0b2a3a;    /* card pozadina */
    --card2: #0a2331;
    --text: #eaf6ff;
    --muted: #b9d7e6;
    --line: rgba(255, 255, 255, .12);

    --brand1: #00A8C6;  /* teal */
    --brand2: #2BC4F4;  /* light blue */
    --brand3: #00D3A7;  /* greenish teal */

    --shadow: 0 18px 45px rgba(0, 0, 0, .35);
    --radius: 18px;
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    color: var(--text);
    background: radial-gradient(1100px 700px at 15% 10%, rgba(43, 196, 244, .18), transparent 60%),
                radial-gradient(900px 650px at 85% 20%, rgba(0, 211, 167, .12), transparent 55%),
                linear-gradient(180deg, var(--bg1), var(--bg2));
}

.page {
    min-height: 100%;
    padding: clamp(18px, 3vw, 34px);
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.page-center {
    align-items: center;
}

.shell {
    width: min(980px, 100%);
}

.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}

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

.brand img {
    width: 56px;
    height: 56px;
    object-fit: contain;
    border-radius: 14px;
    background: rgba(255, 255, 255, .06);
    border: 1px solid var(--line);
    padding: 8px;
}

.brand h1 {
    margin: 0;
    font-size: clamp(18px, 2.2vw, 24px);
    letter-spacing: .2px;
}

.brand p {
    margin: 3px 0 0 0;
    color: var(--muted);
    font-size: 13px;
}

.card {
    background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .03));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-inner {
    padding: clamp(16px, 2.4vw, 22px);
    background: linear-gradient(180deg, var(--card), var(--card2));
}

.card + .card {
    margin-top: 16px;
}

.card h2 {
    margin: 0 0 12px 0;
    font-size: 15px;
    letter-spacing: .5px;
    text-transform: uppercase;
}

.logout-btn {
    background: rgba(255, 255, 255, .05);
    border: 1px solid var(--line);
    color: var(--muted);
    padding: 8px 16px;
    border-radius: 10px;
    text-decoration: none;
    font-size: 13px;
    transition: all .2s;
    cursor: pointer;
}

.logout-btn:hover {
    background: rgba(255, 255, 255, .1);
    color: #fff;
}

.btn {
    padding: 11px 14px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, .16);
    background: rgba(255, 255, 255, .06);
    color: var(--text);
    cursor: pointer;
    font-weight: 800;
    letter-spacing: .2px;
    transition: transform .15s ease, background .15s ease, border-color .15s ease, filter .15s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, .09);
    border-color: rgba(255, 255, 255, .26);
}

.btn-primary {
    border: none;
    background: linear-gradient(90deg, var(--brand2), var(--brand1), var(--brand3));
    color: #06202c;
}

.err {
    background: rgba(176, 0, 32, .14);
    border: 1px solid rgba(176, 0, 32, .35);
    color: #ffd6de;
    padding: 10px 12px;
    border-radius: 14px;
    margin: 0 0 14px 0;
    font-size: 14px;
}

.hint {
    margin-top: 8px;
    color: var(--muted);
    font-size: 12.5px;
    line-height: 1.35;
}