:root {
    --primary-color: #e2136e;
    --primary-hover: #c50f5d;
    --bg-dark: #121212;
    --card-dark: #1e1e1e;
    --input-bg: #1a1a1a;
    --border-color: #333333;
    --text-main: #ffffff;
    --text-muted: #888888;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: #000000;
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

/* Mobile App Frame View */
.mobile-frame {
    width: 100%;
    max-width: 480px;
    min-height: 100vh;
    background-color: var(--bg-dark);
    position: relative;
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.8);
}

/* Header & Back Navigation */
.header-back {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border-color);
}

.header-back a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    margin-right: 15px;
}

.header-back h2, .header-back h3 {
    color: var(--text-main);
    font-size: 20px;
    font-weight: 500;
}

/* Form Styles */
form {
    padding: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-main);
    font-weight: 400;
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    color: var(--text-main);
    outline: none;
    transition: border-color 0.2s;
}

.form-control::placeholder {
    color: #555555;
}

.form-control:focus {
    border-color: var(--primary-color);
}

/* Buttons */
.btn {
    display: block;
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(226, 19, 110, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

/* Utility Links & Texts */
a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.muted {
    color: var(--text-muted);
    font-size: 13px;
}

.text-center {
    text-align: center;
}