/* 
 * File CSS principale del progetto
 * Dark theme con colore di accento configurabile
 */

/* ========================================================================
   VARIABILI - Modifica --accent e --accent-hover per cambiare tema accento
   ======================================================================== */
:root {
    --accent: #6C5CE7;
    --accent-hover: #5A4BD1;
    --accent-soft: rgba(108, 92, 231, 0.15);

    --bg-body: #0B0D13;
    --bg-primary: #111827;
    --bg-secondary: #1F2937;
    --bg-card: #1A2232;
    --bg-input: #0F172A;
    --bg-hover: #263044;

    --text-primary: #E5E7EB;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;

    --border: #2D3748;
    --border-light: #374151;

    --success: #22C55E;
    --danger: #EF4444;
    --warning: #F59E0B;
    --info: #3B82F6;

    --shadow-sm: 0 1px 3px rgba(0,0,0,.3);
    --shadow-md: 0 4px 14px rgba(0,0,0,.4);
    --shadow-lg: 0 10px 40px rgba(0,0,0,.5);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;

    --spacing-xs: 6px;
    --spacing-sm: 10px;
    --spacing-md: 18px;
    --spacing-lg: 28px;
    --spacing-xl: 40px;

    --transition-fast: .15s ease;
    --transition-normal: .25s ease;
}

/* ========================================================================
   RESET
   ======================================================================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ========================================================================
   LAYOUT UTILITIES
   ======================================================================== */
.container { max-width: 1400px; margin: 0 auto; padding: 0 var(--spacing-lg); }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.grid { display: grid; }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }

/* ========================================================================
   CARD
   ======================================================================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

/* ========================================================================
   BUTTONS
   ======================================================================== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-sm);
    font-weight: 600; font-size: 14px;
    cursor: pointer; border: none;
    transition: background var(--transition-fast), transform var(--transition-fast);
}
.btn:hover { transform: translateY(-1px); }

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

.btn-secondary { background: var(--bg-secondary); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #DC2626; color: #fff; }

.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-icon { padding: 8px; border-radius: var(--radius-sm); }

/* ========================================================================
   FORM ELEMENTS
   ======================================================================== */
.form-control {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color var(--transition-fast);
}
.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-control::placeholder { color: var(--text-muted); }

.form-control-file {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
}
.form-control-file::file-selector-button {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    margin-right: 10px;
    font-weight: 600;
}

label, .form-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-secondary);
}

.form-group { margin-bottom: var(--spacing-md); }

textarea.form-control { resize: vertical; min-height: 80px; }

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239CA3AF' stroke-width='2' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* ========================================================================
   NAVBAR / HEADER
   ======================================================================== */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 1000;
}
.header-container {
    max-width: 1400px; margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex; justify-content: space-between; align-items: center;
    height: 64px;
}
.logo {
    display: flex; align-items: center; gap: 10px;
    text-decoration: none; color: var(--text-primary);
    font-size: 20px; font-weight: 700;
}
.logo-icon {
    width: 36px; height: 36px;
    background: var(--accent); border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 700; font-size: 16px;
}

.user-menu { display: flex; align-items: center; gap: 16px; }
.user-info { display: flex; align-items: center; gap: 10px; position: relative; }
.user-avatar {
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--accent); display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 600; font-size: 14px;
}
.user-name { font-weight: 500; color: var(--text-primary); cursor: pointer; display: flex; align-items: center; gap: 6px; }

.dropdown-toggle {
    background: none; border: none; cursor: pointer;
    display: flex; align-items: center; gap: 10px;
    padding: 6px 10px; border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}
.dropdown-toggle:hover { background: var(--bg-hover); }
.dropdown-arrow { transition: transform .25s; }
.dropdown-toggle.active .dropdown-arrow { transform: rotate(180deg); }

.dropdown-menu {
    position: absolute; top: 52px; right: 0;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md); min-width: 200px;
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: all .2s;
}
.dropdown-menu.show { opacity: 1; visibility: visible; transform: translateY(0); }

.dropdown-item {
    padding: 10px 16px; display: flex; align-items: center; gap: 10px;
    color: var(--text-secondary); text-decoration: none;
    transition: background var(--transition-fast);
    border-bottom: 1px solid var(--border);
}
.dropdown-item:last-child { border-bottom: none; }
.dropdown-item:hover { background: var(--bg-hover); color: var(--text-primary); }

.logout-btn {
    background: var(--danger); color: #fff; border: none; text-decoration: none;
    padding: 8px 16px; border-radius: var(--radius-sm);
    font-weight: 600; font-size: 13px; cursor: pointer;
    transition: background var(--transition-fast);
}
.logout-btn:hover { background: #DC2626; color: #fff; }

/* ========================================================================
   PASSWORD
   ======================================================================== */
.password-input-wrapper { position: relative; display: flex; align-items: center; }
.password-input-wrapper .form-control { padding-right: 44px; }
.password-toggle-btn {
    position: absolute; right: 12px; background: none; border: none;
    cursor: pointer; color: var(--text-muted); padding: 4px;
    display: flex; align-items: center; justify-content: center;
    transition: color var(--transition-fast); z-index: 2;
}
.password-toggle-btn:hover { color: var(--text-primary); }

.password-requirements {
    margin-top: 10px; padding: 10px 14px;
    background: var(--bg-secondary); border-radius: var(--radius-sm);
    font-size: 13px;
}
.password-requirements ul { list-style: none; }
.password-requirements li {
    display: flex; align-items: center; gap: 8px; padding: 3px 0;
    color: var(--text-secondary); transition: color var(--transition-fast);
}
.password-requirements li.req-ok { color: var(--success); }
.password-requirements li.req-fail { color: var(--danger); }
.password-requirements .req-icon { font-size: 14px; font-weight: 700; min-width: 16px; }

/* ========================================================================
   RESPONSIVE
   ======================================================================== */
@media (max-width: 768px) {
    .container { padding: 0 15px; }
    .header-container { padding: 0 15px; }
}