:root {
    --bg-color: #0b0e14;
    --bg-secondary: #121826;
    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.12);
    --accent-blue: #00d2ff;
    --accent-purple: #9d50bb;
    --text-color: #e5e7eb;
    --muted-text: #94a3b8;
    --danger: #f87171;
    --success: #4ade80;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Roboto, Arial, sans-serif;
    background: radial-gradient(circle at top right, #1a1c2c, #0b0e14);
    color: var(--text-color);
    min-height: 100vh;
}

a {
    text-decoration: none;
}

.header {
    background: rgba(9, 12, 20, 0.75);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    color: white;
    padding: 20px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo,
.splash-logo {
    font-weight: 800;
    font-style: italic;
    color: var(--accent-blue);
    line-height: 1;
    transform: skew(-12deg);
    text-shadow: 0 0 12px rgba(0, 210, 255, 0.35);
}

.logo {
    font-size: 48px;
}

.splash-logo {
    font-size: 90px;
}

.brand-text h1,
.splash-text h1 {
    margin: 0;
    letter-spacing: -1px;
    background: linear-gradient(to right, #ffffff, var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text h1 {
    font-size: 30px;
}

.brand-text p,
.splash-text p {
    margin: 4px 0 0 0;
    color: var(--muted-text);
    font-size: 14px;
}

.splash-text p {
    font-size: 18px;
}

.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

.hero-box,
.form-card,
.success-card,
.welcome-box,
.balance-card,
.action-card,
.transactions-card {
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    box-shadow: var(--shadow);
}

.hero-box,
.form-card,
.success-card,
.welcome-box,
.balance-card,
.action-card,
.transactions-card {
    padding: 28px;
}

.hero-box,
.success-card {
    text-align: center;
}

.hero-box h2,
.success-card h2,
.welcome-box h2,
.form-card h2,
.balance-card h3,
.action-card h3,
.transactions-card h3 {
    margin-top: 0;
    background: linear-gradient(to right, #ffffff, var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-box h2,
.success-card h2,
.welcome-box h2 {
    font-size: 36px;
}

.hero-box p,
.success-card p,
.welcome-box p,
.empty-text {
    color: var(--muted-text);
}

.form-card,
.success-card {
    max-width: 720px;
    margin: 40px auto;
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.button-group a,
.logout-link a,
button {
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    border: none;
    border-radius: 10px;
    color: white;
    padding: 12px 22px;
    font-weight: 700;
    font-size: 15px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
    display: inline-block;
}

.button-group a:hover,
.logout-link a:hover,
button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 18px rgba(0, 210, 255, 0.35);
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 700;
    color: #dbeafe;
}

input,
select {
    width: 100%;
    padding: 11px 12px;
    margin-bottom: 18px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
    font-size: 15px;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 210, 255, 0.12);
}

.back-link {
    display: inline-block;
    margin-top: 16px;
    color: var(--accent-blue);
    font-weight: 700;
}

.error-message {
    color: var(--danger);
    font-weight: 700;
    margin-bottom: 18px;
}

.success-message {
    color: var(--success);
    font-weight: 700;
    margin-bottom: 18px;
}

.balance-grid,
.action-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.balance-amount {
    font-size: 32px;
    font-weight: 800;
    color: #ffffff;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
    overflow: hidden;
    border-radius: 12px;
}

th,
td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

th {
    background: rgba(255, 255, 255, 0.08);
    color: #dbeafe;
}

tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.03);
}

.splash-screen {
    position: fixed;
    inset: 0;
    background: #0b0e14;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeOut 1s ease forwards;
    animation-delay: 1.4s;
}

.splash-content {
    display: flex;
    align-items: center;
    gap: 18px;
    color: white;
    animation: slightPop 0.8s ease;
}

@keyframes fadeOut {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

@keyframes slightPop {
    0% {
        transform: scale(0.95);
        opacity: 0.6;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

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

    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .splash-content {
        flex-direction: column;
        text-align: center;
    }
}