/* ============================
   VARIABLES
============================ */
:root {
    --bumble-yellow: #eb2c4b;
    --white: #FFFFFF;
    --black: #1A1A1A;
    --gray-700: #555;
    --gray-300: #E0E0E0;
    --gray-100: #F5F5F5;
    --gray-200: #EEEEEE;

    --radius-large: 28px;
    --radius-small: 14px;
    --shadow-soft: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-card: 0 2px 10px rgba(0,0,0,0.10);
}

/* ============================
   RESET & BODY
============================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Poppins", sans-serif;
    background: linear-gradient(135deg, #f8f9fa 0%, #f0f1f3 100%);
    color: var(--black);
    overflow-x: hidden;
    line-height: 1.55;
    min-height: 100vh;
}

/* ============================
   HEADER
============================ */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 60px;
    background: var(--white);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

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

.header-login-btn, .header-signup-btn {
    font-weight: 600;
    font-size: 15px;
    color: var(--white);
    background: var(--bumble-yellow);
    text-decoration: none;
    padding: 12px 32px;
    border-radius: 24px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    box-shadow: 0 4px 12px rgba(255, 55, 123, 0.2);
    border: none;
    cursor: pointer;
}

.header-login-btn:hover, .header-signup-btn:hover {
    background: #ff2870;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(255, 55, 123, 0.3);
}

.header-login-btn:active, .header-signup-btn:active {
    transform: translateY(0);
}

.header-login-text {
    color: var(--black);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
}

.header-login-text:hover {
    color: var(--bumble-yellow);
}

/* ============================
   AUTH CONTAINER
============================ */
.auth-container {
    display: flex;
    min-height: calc(100vh - 72px);
}

.auth-left {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background-image: url('/img/form_main_bg.png');
    background-size: cover;
    background-position: center;
    position: relative;
}

.auth-left::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
}

.auth-left-content {
    position: relative;
    z-index: 1;
    color: var(--white);
    text-align: center;
    max-width: 400px;
}

.auth-left-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 16px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.auth-left-subtitle {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
    text-shadow: 0 2px 6px rgba(0,0,0,0.2);
    opacity: 0.95;
}

.auth-right {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: var(--white);
}

.auth-form-wrapper {
    width: 100%;
    max-width: 420px;
}

/* ============================
   FORM STYLES
============================ */
.auth-form-title {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--black);
    letter-spacing: -0.5px;
}

.auth-form-subtitle {
    font-size: 14px;
    color: var(--gray-700);
    margin-bottom: 32px;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--black);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 16px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-small);
    font-family: "Poppins", sans-serif;
    font-size: 14px;
    transition: all 0.3s ease;
    background: var(--white);
    color: var(--black);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--bumble-yellow);
    box-shadow: 0 0 0 3px rgba(235, 44, 75, 0.1);
}

.form-group input::placeholder {
    color: #999;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-row .form-group {
    flex: 1;
}

.social-login-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-200);
}

.social-login-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px 16px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-small);
    background: var(--white);
    color: var(--black);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.social-login-button:hover {
    border-color: var(--bumble-yellow);
    background: rgba(235, 44, 75, 0.05);
}

.social-login-button i {
    font-size: 18px;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--bumble-yellow);
}

.checkbox-group label {
    font-size: 13px;
    color: var(--gray-700);
    cursor: pointer;
    margin: 0;
}

/* ============================
   BUTTONS
============================ */
.btn-submit {
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--bumble-yellow) 0%, #ff5a8a 100%);
    color: var(--white);
    border: none;
    border-radius: var(--radius-small);
    font-weight: 700;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(235, 44, 75, 0.2);
    margin-top: 8px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(235, 44, 75, 0.35);
}

.btn-submit:active {
    transform: translateY(0);
}

/* ============================
   LINKS & TEXT
============================ */
.form-links {
    display: flex;
    justify-content: space-between;
    margin-top: 16px;
    font-size: 13px;
}

.form-links a {
    color: var(--bumble-yellow);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.form-links a:hover {
    text-decoration: underline;
}

.signup-link {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
    font-size: 14px;
    color: var(--gray-700);
}

.signup-link a {
    color: var(--bumble-yellow);
    font-weight: 700;
    text-decoration: none;
}

.signup-link a:hover {
    text-decoration: underline;
}

/* ============================
   ALERTS
============================ */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-small);
    font-size: 13px;
    margin-bottom: 16px;
}

.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid rgba(220, 53, 69, 0.3);
    color: #c82333;
}

.alert ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.alert li {
    margin: 4px 0;
}

/* ============================
   FOOTER
============================ */
.footer {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: 40px 60px;
    text-align: center;
    font-size: 13px;
    color: var(--gray-700);
}

.footer a {
    color: var(--gray-700);
    text-decoration: none;
    margin: 0 8px;
}

.footer a:hover {
    color: var(--bumble-yellow);
}

/* ============================
   RESPONSIVE TABLET
============================ */
@media (max-width: 1024px) {
    .header {
        padding: 14px 40px;
    }

    .auth-left {
        padding: 30px;
    }

    .auth-right {
        padding: 30px;
    }

    .auth-left-title {
        font-size: 28px;
    }

    .footer {
        padding: 30px 40px;
    }
}

/* ============================
   RESPONSIVE MOBILE
============================ */
@media (max-width: 768px) {
    .header {
        padding: 12px 20px;
    }

    .header-logo {
        height: 32px;
    }

    .header-right {
        gap: 10px;
    }

    .header-login-btn, .header-signup-btn {
        padding: 10px 20px;
        font-size: 13px;
    }

    .auth-container {
        flex-direction: column;
        min-height: auto;
    }

    .auth-left {
        display: none;
        min-height: 300px;
        padding: 30px 20px;
    }

    .auth-right {
        min-height: calc(100vh - 72px);
        padding: 20px;
    }

    .auth-form-wrapper {
        max-width: 100%;
    }

    .auth-form-title {
        font-size: 24px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer {
        padding: 20px;
        font-size: 12px;
    }

    .footer a {
        margin: 0 4px;
    }
}