:root {
    --accent-1: #5a3d68;
    --accent-2: #7a6a82;
    --accent-3: #b8a9b8;
    --base: #f3eef1;
    --error: #b03a28;
    --input-border: #a895a8;

    --background-panel: rgba(247, 243, 245, 0.85);
    --background-header: linear-gradient(to right, var(--accent-1), var(--accent-2));
    --background-input: rgba(255, 255, 255, 0.9);
    --background-error: rgba(200, 70, 48, 0.1);

    --shadow-outer-light: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-outer-medium: 0 10px 20px rgba(0, 0, 0, 0.15);
    --shadow-outer-heavy: 0 20px 40px rgba(0, 0, 0, 0.2);
    --shadow-inner-light: inset 0 1px 1px rgba(255, 255, 255, 0.8);
    --shadow-inner-dark: inset 0 -1px 1px rgba(0, 0, 0, 0.05);
    --shadow-header: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-logo: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-input-inner: inset 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-input-outer: 0 1px 0 rgba(255, 255, 255, 0.8);
    --shadow-input-focus: 0 0 0 2px rgba(108, 77, 123, 0.2), 0 2px 6px rgba(108, 77, 123, 0.1);
    --shadow-button: 0 4px 8px rgba(108, 77, 123, 0.3);
    --shadow-button-hover: 0 6px 12px rgba(108, 77, 123, 0.4);
    --shadow-arrow: 0 -2px 2px rgba(0, 0, 0, 0.1);

    --border-outer: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
    --border-input: 1px solid var(--input-border);
    --border-input-focus: 1px solid var(--accent-1);

    --text-header: white;
    --text-label: var(--accent-1);
    --text-button: white;
    --text-error: var(--error);
    --text-footer: var(--accent-2);
    --text-link: var(--accent-1);
    --text-link-hover: var(--accent-2);

    --icon-toggle: var(--accent-2);
    --icon-toggle-hover: var(--accent-1);

    --background-arrow: var(--base);
}

* {
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", Roboto, Oxygen, sans-serif;
    background: linear-gradient(135deg,
            var(--accent-3) 0%,
            var(--base) 50%,
            var(--accent-3) 100%);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
}

@keyframes gradientBG {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

.access-panel {
    width: 90%;
    max-width: 380px;
    background: var(--background-panel);
    backdrop-filter: blur(10px);
    border-radius: 18px;
    box-shadow: var(--shadow-outer-light),
        var(--shadow-outer-medium), var(--shadow-outer-heavy),
        var(--border-outer);
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.access-panel::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 18px;
    box-shadow: var(--shadow-inner-light),
        var(--shadow-inner-dark);
    pointer-events: none;
    z-index: -1;
}

.panel-header {
    background: var(--background-header);
    padding: 20px;
    text-align: center;
    color: var(--text-header);
    position: relative;
    box-shadow: var(--shadow-header);
}

.panel-header::after {
    content: "";
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 30px;
    background: var(--background-arrow);
    clip-path: polygon(0% 0%, 100% 0%, 50% 50%);
    filter: drop-shadow(var(--shadow-arrow));
}

.logo {
    width: 36px;
    height: 36px;
    margin: 0 auto 10px;
    object-fit: contain;
    filter: drop-shadow(var(--shadow-logo));
}

.panel-header h1 {
    margin: 0;
    font-weight: 600;
    letter-spacing: 0.5px;
    font-size: 1.4rem;
}

.auth-form {
    padding: 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.input-group {
    width: 90%;
    max-width: 320px;
    position: relative;
    margin-bottom: 18px;
}

.input-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-label);
    font-size: 0.85rem;
}

.input-group input {
    width: 100%;
    padding: 10px 40px 10px 14px;
    border: var(--border-input);
    border-radius: 8px;
    background: var(--background-input);
    font-size: 0.9rem;
    box-shadow: var(--shadow-input-inner),
        var(--shadow-input-outer);
    transition: all 0.3s ease;
    box-sizing: border-box;
    height: 40px;
}

.input-group input:focus {
    outline: none;
    border: var(--border-input-focus);
    background: var(--background-primary);
    box-shadow: var(--shadow-input-focus);
}

.toggle-pw {
    position: absolute;
    right: 12px;
    top: 70%;
    transform: translateY(-50%);
    color: var(--icon-toggle);
    cursor: pointer;
    background: none;
    border: none;
    font-size: 1rem;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toggle-pw:hover {
    color: var(--icon-toggle-hover);
}

.submit-btn {
    width: 90%;
    max-width: 320px;
    padding: 12px;
    border: none;
    border-radius: 8px;
    background: var(--background-header);
    color: var(--text-button);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-button);
    margin-top: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-button-hover);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid var(--text-button);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.error-msg {
    width: 90%;
    max-width: 320px;
    color: var(--text-error);
    font-size: 0.8rem;
    text-align: center;
    padding: 8px;
    background: var(--background-error);
    border-radius: 8px;
    margin: 5px 0 12px 0;
}

.footer-note {
    width: 90%;
    max-width: 320px;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-footer);
    margin-top: 12px;
}

.back-home {
    display: inline-block;
    color: var(--text-link);
    text-decoration: none;
    font-size: 0.85rem;
    margin-top: 12px;
    transition: color 0.3s ease;
    line-height: 1;
}

.back-home:hover {
    color: var(--text-link-hover);
}

.toggle-pw:focus {
    outline: 2px solid var(--accent-1);
    outline-offset: 2px;
}