:root {
    --opiran-bg: #05070b;
    --opiran-panel: rgba(15, 18, 27, .72);
    --opiran-border: rgba(255,255,255,.09);
    --opiran-text: #f4f6fa;
    --opiran-muted: #9da5b5;
    --opiran-red: #ff244f;
    --opiran-red2: #ff003c;
    --opiran-shadow: 0 20px 60px rgba(0,0,0,.42);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    background:
        radial-gradient(
            circle at 50% -10%,
            rgba(255,0,60,.12),
            transparent 35%
        ),
        var(--opiran-bg);
    color: var(--opiran-text);
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "SF Pro Display",
        "Segoe UI",
        sans-serif;
}

body {
    min-height: 100vh;
    overflow-x: hidden;
}

button,
input,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

#opiran-app {
    width: 100%;
    min-height: 100vh;
    padding: 18px;
}

.opiran-page {
    max-width: 900px;
    margin: 0 auto;
    padding-bottom: 50px;
}

.opiran-page-title {
    font-size: 24px;
    font-weight: 800;
    margin: 8px 0 22px;
}

.opiran-hero {
    padding: 28px;
    margin-bottom: 18px;
    border: 1px solid var(--opiran-border);
    border-radius: 28px;
    background:
        linear-gradient(
            145deg,
            rgba(255,255,255,.08),
            rgba(255,255,255,.025)
        );
    backdrop-filter: blur(22px);
    box-shadow: var(--opiran-shadow);
}

.opiran-brand {
    font-size: 40px;
    font-weight: 950;
    letter-spacing: 5px;
}

.opiran-subtitle {
    margin-top: 8px;
    color: var(--opiran-muted);
}

.opiran-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 12px;
}

.opiran-card,
.opiran-section-card {
    border: 1px solid var(--opiran-border);
    background: var(--opiran-panel);
    backdrop-filter: blur(18px);
    box-shadow: 0 12px 35px rgba(0,0,0,.24);
    border-radius: 22px;
}

.opiran-card {
    min-height: 125px;
    padding: 20px;
    color: var(--opiran-text);
    text-align: center;
    transition:
        transform .18s ease,
        border-color .18s ease,
        background .18s ease;
}

.opiran-card span {
    display: block;
    font-size: 32px;
    margin-bottom: 10px;
}

.opiran-card:hover,
.opiran-card:active {
    transform: translateY(-2px);
    border-color: rgba(255,36,79,.45);
    background: rgba(255,36,79,.08);
}

.opiran-section-card {
    padding: 20px;
    margin-bottom: 12px;
}

.opiran-section-card h3 {
    margin-top: 0;
}

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

.opiran-input {
    width: 100%;
    margin: 7px 0 16px;
    padding: 14px;
    border-radius: 15px;
    border: 1px solid var(--opiran-border);
    background: rgba(0,0,0,.28);
    color: white;
    outline: none;
}

.opiran-input:focus {
    border-color: rgba(255,36,79,.65);
}

.opiran-primary {
    width: 100%;
    border: 0;
    border-radius: 15px;
    padding: 14px;
    background:
        linear-gradient(
            135deg,
            var(--opiran-red),
            var(--opiran-red2)
        );
    color: white;
    font-weight: 800;
}

.opiran-back {
    margin-top: 12px;
    padding: 12px 18px;
    border: 1px solid var(--opiran-border);
    border-radius: 14px;
    background: rgba(255,255,255,.05);
    color: white;
}

.opiran-alert {
    padding: 15px;
    margin-bottom: 15px;
    border: 1px solid rgba(255,36,79,.25);
    border-radius: 18px;
    background: rgba(255,36,79,.07);
    line-height: 1.7;
}

.opiran-empty,
.opiran-error {
    padding: 25px;
    border-radius: 20px;
    border: 1px solid var(--opiran-border);
    background: var(--opiran-panel);
    color: var(--opiran-muted);
}

.opiran-loading {
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    color: var(--opiran-muted);
}

.opiran-loader {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 3px solid rgba(255,255,255,.12);
    border-top-color: var(--opiran-red);
    animation: opiran-spin .8s linear infinite;
}

@keyframes opiran-spin {
    to {
        transform: rotate(360deg);
    }
}

#opiran-toast {
    position: fixed;
    z-index: 999999;
    left: 16px;
    right: 16px;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.opiran-toast-item {
    max-width: 500px;
    margin: auto;
    width: 100%;
    padding: 13px 16px;
    border-radius: 15px;
    background: rgba(20,22,30,.94);
    border: 1px solid var(--opiran-border);
    box-shadow: var(--opiran-shadow);
    backdrop-filter: blur(18px);
}

.opiran-toast-item.success {
    border-color: rgba(0,255,150,.35);
}

.opiran-toast-item.error {
    border-color: rgba(255,36,79,.45);
}

@media (max-width: 520px) {
    #opiran-app {
        padding: 12px;
    }

    .opiran-grid {
        grid-template-columns: 1fr 1fr;
    }

    .opiran-brand {
        font-size: 32px;
    }

    .opiran-card {
        min-height: 112px;
    }
}